re: Being able to use touchpad: https://www.petekeen.net/mounting-a-magic-trackpad-on-a-kinesis-advantage-keyboard may be a setup you haven’t seen before.
(When I had bad RSI I used Kensington Expert Trackball Mouse solely for the ball and Kinesis Dual Pedal for clicking.)
re: Being able to use touchpad: https://www.petekeen.net/mounting-a-magic-trackpad-on-a-kinesis-advantage-keyboard may be a setup you haven’t seen before.
(When I had bad RSI I used Kensington Expert Trackball Mouse solely for the ball and Kinesis Dual Pedal for clicking.)