[nvarsj]

I'm not convinced by that. I use thumb clusters now, but on a normal keyboard I would always move my whole hand and hit backspace with my right ring finger. Similarly with modifiers I would either karate chop or move my hand. Using pinky should be avoided if possible. Similarly the common recommendation to bind caps lock to control is the worst possible thing for RSI.

[WorldMaker]

> I would always move my whole hand and hit backspace with my right ring finger.

My understanding is that (maybe non-intuitively) whole hand movements are more likely to cause wrist-related RSI than single finger travels. (Single finger travels are more likely to create knuckle RSIs, certainly.) The missing letter in RSI is sometimes "movement" as it is stress from repetitive movements.

Anecdotally, the biggest mistake and the source of most of my pain from the way I had learned QWERTY was a lot of whole hand movements, and reducing those was a very clear and specific goal for me when I relearned touch typing (on Colemak).

[chupasaurus]

I'm fine using pinky because I'm a guitar player who struggled with that and fixed it by training for more than a year.