I currently have the Telson Germany fitted to the BH side of my main blade. (Typically I use the Telson 100 instead but I felt like a change).
I've been using it for the last month, and frankly its not that bad.... nor is it terribly good either however..... frankly it's a bit weird. But I'm persisting with it for now. as it has genuine promise.... I think.
It's definitely slower than the regular T100 regular - significantly so (about 8-9% slower at least). There's a much lower COR (Coefficient of Restitution -- ie: catapult effect), but that said, it's not a particularly slow rubber either, as the T100 is also genuinely quick, ...which then makes the T-Germany about 91% of genuinely quick.
Its playing feel is definitely unique, as is the stroke you need to use to get the best performance out of it.
If I use my regular block / punch BH stroke with little brush, then it feels dead.... almost to the point of it being utterly unusable frankly.... (welcome to net cord city folks, population Me!)
There's no easy speed or spin on offer here at all, despite its use of an ESN sponge.
But then I started using a different BH stroke altogether, and the rubber just transformed - spin and speed became very impressive, and it started giving my opponent all sorts of trouble (enough for him to comment on it immediately).
Some folks call this altered BH stroke a "Break" stroke I believe? Anyway, it involves you basically (from your usual BH loop/drive starting position) just 'turning' your bat over the top of the ball as you play your stroke very much from the elbow. The feeling is much more like 'turning' the ball more than hitting it or brushing it. .
You also focus less on driving the ball deep into the sponge layer, and more on maintaining contact with the ball as much as possible during the stroke.
Forget about generating speed with this stoke, it's really more about re-directing the ball with medium force and maintaining contact with the ball as much as possible, while also rolling your wrist a bit more to keep lots of contact as your blade comes over the top of the ball.
And when I did this, the quality of my returns was nuts... it was chalk and cheese.
The speed of the ball was derived more from spin-based acceleration, rather than elastic rebound. This is not my usual BH stroke however, its more something I do to control the ball during returns rather than going on the offensive with extra hitting energy.
While it worked very well, it was also very annoying and is not my instinctive stroke at all, so I then twiddled my blade, putting the Telson Germany on the FH side, and my usual Rxton 9 in 39 degrees became my BH rubber. This worked a LOT better frankly, so I think the T-Germany is really a FH rubber.
On the FH side it has a VERY, VERY low and flat throw angle indeed (or it does at least for me)... arguably the lowest throw angle I've ever seen from a grippy rubber.
But it also was solid, reliable, predictable, fast and very spinny on the FH side, while the Rxton 9 was still just bouncy enough unboosted to function adequately as a bit of a BH banger.
Long story short, it's really not a bad rubber once you get the hang of getting spin out of it. But its also a bit weird, which is both a good thing and a bad thing.
Its good in that its a bit more unpredictable and the ball accelerates forward off the bounce rather the bouncing upwards. Its also good in the great control it gives you.
It's bad however in that there's lots of slightly better competing rubbers out there you can choose from, one of which just happens to be the Telson 100.
Just like with Loki's Kirin series of rubbers , there's no easy spin on offer here - you have to brush the ball a lot and really work at your stroke technique. It doesn't however feel anything like an ESN rubber at all, so don't go into trying or buying one with that expectation, or you'll be disappointed.
But if you keep it on your FH, and keep a regular T100 for your BH, then the T-Germany can and does reward you. Speed potential and spin potential is genuinely high, and control is frankly pretty bloody good for ANY FH oriented grippy rubber.
Haven't used it long enough to comment on its longevity, but given its hard playing feel it might last a pretty long time.
The following will also sound downright weird in a way, but it also kinda fits the rubber too (strangely)...
Imagine for a moment, that your standard unboosted H3 in 40 degree sponge, was actually a grippy rubber, not a tacky one, and had a tiny bit more bounce to it than usual.
If you can imagine that, then THAT is what to my mind at least, that the Telson Germany kind of plays like...
I.e.: it's not very lively, not very bouncy, it's frankly pretty hard and unyielding, with a very flat throw angle...
... but it's also extremely spinny when you brush with it, with a similar sense of having nigh-unlimited speed potential to it, if you could only get your stroke and weight transfer JUST RIGHT in order to make full use of it.
...That's the best way I can describe it really. Like I said, it's an odd one, but there is decent playing potential to it. you just need to stick with it, and work with it for a while, in order to master both its rather weird playing feel, and its totally un-instinctive (but surprisingly large) gearbox.
It's the grippy rubber for H3 fans who don't want to use a regular H3. If that includes you, then maybe give it a go.
Just keep it well away from your BH side if you like to punch the ball, or rely on incoming ball velocity to create quality... It simply refuses to cooperate under these conditions.
Be it FH or BH, much like with a regular H3 itself, you need to really stroooooooke the ball, with lots of contact time and weight transfer power through your stroke to really make it come alive.
Hope this helps.