[neilv]

Circa 2000, some people were using the Twiddler one-handed chorded keyboard with wearable computing. I'm not certain this was for coding, but Bradley Rhodes was using his wearable heavily, with Emacs as the primary UI in his head-up display.

[ctrw]

They are OK for text input, it's the extra symbols you need for coding that are the issue. Even the () for lisp are second class characters.