Hi Nate,
I guess I will NOT really know until I slap rubbers on them... then I can know if it will whip well or not.
For those folks who do not realize it yet, if a handle is shaped the right way, one can really whip it at the end with the fingers and inside portion of the outer/lower chunk of beef on your paw.
I see Nate you have made the 103 gram version wih a similar shape/overall dimensions (it is almost roundish) as the original 105g blade... and the 107g Blade has a much more pronounced oval shape.
The THEORETICAL advantages of the latter oval shape is that there is a little more width and when you whip at the end violently with fingers and meat of paw, you have a little mre with on top which SHOULD make it easier to initiate that whip. The advantages I saw of the rounder shape were that it fit my hand well, was really easy to wrap hand around handle and keep it there... and the somewhat shorter width accross handle COULD possible result in a more accellerating whip if done violently enough at the right time.
The last part of my feelings on the handle may explain why I feel so good operating Nate' REJECT 105g blade. Not a reject in that it is reject kind of quality, quite the opposite in that only that Nate really didn't want to play matches with a 105g blade that could double as a one-shot knockout weapon in close quarters hand to hand combatives.
In an obscure part of one of my posts last year, I related a story where our City's legend TT player, James T got a Balsa ST blade from a well respected dude in the blade making indusrty : BBC Charlie his-self. I so HATE on Balsa blades, but when James let me hold that one, I KNEW I would be able to whip that bat and spin a ball heavy. I tried it for three loops, I think rubber was an OFF control class one I disremember name, but it wasn't a modern spin rubber... but that sucka spun the cover off the ball.
So... my liking for a good handle shape and fit and feel can play a large part in how I like a blade and how it can do one of the most important taks I ask of it: SPIN THE DAMN BALL.
Another thing that can be important is transition between FH to BH and BH tod FH... for me, this is why overall, I went from FL to ST handles... so a really good feeling shape on the handle is a damn good start to a blade.