The styling is not too bad and the guitar looks interesting, too, well crafted. I'd want to know how they sound through my favorite amp.
It would be an interesting test drive but in the end, wrist problems don't plague me, so for the money and not yet having all the ricks I really need ...
It's actually an interesting concept, I suppose it would help with keeping your hands in a better position.
If done correctly, I can't see any reason why it wouldn't work just fine. Essentially, with respect to any individual string, at any one point, the fretboard isn't any different than a standard flat board, it's just twisted into a helical shape around the string. The trick is keeping the shape right such that under each string it's the same distance to the board. Not too hard, mathematically, but probably more difficult in the real world.
I have NO idea what to do with those skinny stringed things... I'm just a bass player...