Always good to see new inventions in this market; they can indirectly help to influence unorthodox peripherals that would actually be worthwhile; which this thing is not.
This is like force feedback on your forearms. Ok great, but that's extremely niche. It'd be ok for a boxing/fighting game, maybe gun recoil... though what other venue would it actually make sense in?
Now if they made forearm/hand/wrist feedback that could be used in conjunction with traditional peripherals(with that sole purpose of being feedback oriented), then that would be ok.
It's oddness outweighs it's relevance.