Can anyone weight in on personal experience and if you felt wrist strain? As a pianist, I think the emphasis on finger-movement chording is misguided. Yes you can play chords on the piano but the entire point is to minimize finger movement - send as much movement as possible to the hand, wrist, forearm, arm, and body so as to minimize local movement. The reason is because if you try to do everything with your fingers, you increase your odds of getting tendonitis. Using a device that is designed to localize movement just to the fingers - through chording no less - strikes me as completely backwards ergonomically.
I see the benefit for those that already have movement limitation, but not really otherwise.
I see the benefit for those that already have movement limitation, but not really otherwise.