This is interesting, the german boy in the video seems to do pretty well without boosting. He does say that he has to smack it a bit harder but that is as a comparison to the rubber he normally uses.
It's a good rubber lodro, but it definitely has less regular speed than the R9. Frankly it feels only slightly faster to me (unboosted) than a regular R3Pro. It's not a slow rubber at all, but it's also a long, long way from having a tensor-like feel.
To my mind It's feels more like an all-round rubber. There's this mild, mushy 'hole' in its impact response that gives it a LOT of dwell and spin on lower speed shots, but can actively interfere with your top speed on all your high impact ones. It's almost like the top third of the sponge layer is either missing entirely, or is made of entirely different (lower) density material than the other two thirds. It is capable of very decent speed, but just like a regular H3, you *really* have to have good technique to get that speed out of it.
I went to a training session recently run by a bunch of young visiting provincial players from a Chinese University. I had a non-boosted R7 fitted on the FH side of my blade (I was testing a new blade prototype with it at the time). They were instructing me in power looping away from the table at one point, and one of the coaching players borrowed my blade to demonstrate his desired technique.
His first attempt at FH looping normally with the R7 blade only *just* cleared the net, at which point he actually paused and laughed at the rubber. All his subsequent shots went back to hitting the baseline, but he was also putting lots more oomph into each shot than he normally had to with his H3N... And he was only about eight feet behind the table at the time.
It's really not a *bad* rubber for the price frankly, but for looping away from the table you really do need to think about boosting it first, or transferring weight perfectly on every stroke, (or even better, doing both).
My weight transfer was a little off the mark at the time, so I was struggling a bit to loop away from the table with it, hence my coach's demonstration. On the plus side, the R7's lack of catapult (and that training session) were both handy in highlighting a technical FH fault I had recently developed, that my more powerful R9 set-up was both partially compensating for and effectively hiding from me. My FH got far stronger as a result of correcting the error, but highlighting technique issues is not really what your FH rubber is supposed to be used for, plus I still have to work hard to use the thing away from the table, even with better technique.
Think of it as being like a very poorly boosted regular pig-skin variety H3: in its un-boosted form, It's basically an all-round serving & short-game spin machine, that is best playing close to the table. Sure, you can loop with it away from the table just fine if you're young, strong and aggressive with brilliant technique... But at our age and playing level mate, why the hell would you bother?
You either boost the thing properly and take your FH to another level in the process, or else you switch to something else entirely. That way you can still use your right arm properly and walk around work without limping or wincing a lot the following day after a big match.
EDIT:
Interesting!
On re-watching the video, that gent is clearly getting *much* more speed out of his R7 than I do out of mine. His sponge also looks substantively different to the sponge on mine (mine is far more of the typical denser Chinese pig skin / cake sponge variety!).
Additionally I wouldn't describe the R7 as a hybrid at all! Just the opposite, it's tacky as hell. That's a lot like calling a H3 a hybrid IMO.
In all fairness to Loki, the R7 rubbers I've got were all purchased over a year ago. So maybe they have changed the rubber substantially since then (certainly going by that video, they're offering a much bigger range of rubber densities on the R7 now than they did when I bought mine).
(Or alternatively, maybe I just got a bum batch of rubbers and their previous QA issues are acting up again. 🙄 Which would be a shame frankly, as they'd made a lot of progress on that lately.)