It is different to look at, but the editing modes let you type the APL characters without too much difficulty. I spent about 3 months doing a deep-dive into APL last year, it took about two weeks to become proficient typing it (already a touch typist, though). I still remember most of the character positions (the worst part for me was that I use Dvorak, so the visualized keymap is useless since most assume QWERTY layouts). I mostly used emacs, I think the default prefix character was `, but switched it to . . Typing iota: .i. Typing rho: .r.
