Dang that's a great idea. C-c C-c for me triggers vim slime, but the semantic of using it to exit insert mode might warrant a change

It behaves differently than Esc.

I am also curious as to how. I have been using CTRL-c for quite some time and even remapped sublime vintage mode to use it on Windows when I am. It using Vim.

See my reply to the other comment.

How?

2ix<esc> inserts “xx”

2ix<c-c> inserts “x”

Also, <c-c> does not trigger InsertLeave.