The large thumb keys of the Kinesis Advantage Keyboards (writing on one of them) can be pressed without moving the hands at all, because of their "loose fit". T

The large thumb keys of the Kinesis Advantage Keyboards (writing on one of them) can be pressed without moving the hands at all, because of their "loose fit". They probably work very well for a large range of hands sizes. I've programmed my layout so that the thumb keys are (from left to right) mod1, ctrl, return, space. The right ones with mod1 delete and backspace. On the home row (with mod1) arrow keys, alt, shift, ... . So the large thumb keys are absolute essential in my layout. And 4 of them are enough due to using one of them as mod1. I don't use the regular sized keys in the cluster at all. I can't imaging going back to a none curved, none orthogonal keyboard. Anyway, the Glove80 is still really interesting, esp. the various switches and the more affordable price.