I completely agree with everything you said.
I found the same issues with the 133. Serving is the big down side. Basically you can only push a serve with it because it's so powerful.
It's also not very good for topsin . But for volleys and return of serves....OMG!
You can practically serve underhanded and still put a volley away. And Even a bomb serve will be returned with ease.
As far a the "V" grip it takes a long time to get used to it. There is a VERY large learning curve and that is the reason it was unsuccessful .
That why I suggested using double sides mounting tape ( wilander does the same ill post it) . This way you can make it thinner and build it up as you become more used to it. I started with only one strip and built it up now to five strips.