When I started using a split keyboard, I noticed the comfortable distance between the halves drifted further apart until my arms came forward straight from signs.
Now years later I tried using a more traditional design with my arms angled toward the center again. I noticed my back hurt by the end of the day.
I’m not if there’s some optimal arm angle but I’ve adapted to my heavily split design. For tall folk with broader shoulders it’s nice to have this option.
