Which becomes pretty annoying if you regularly work over remote SSH sessions to large number of hosts where you may not be the only person on a given user.

(You could have some local shorthand to copy over your vimrc and explicitly start vim with a different copy, at which point you'll only have problems with shared tmux/screen sessions)

You pretty quickly run into dependency hell.

You still want i mapped somewhere. Do you put that on qwerty-i/norman-r? Now where do you put r? qwerty-r/norman-f? Where do you put f? qwerty-f/norman-t?

It's a mess. It would be much better if commands weren't so tightly associated with keys in vim.