A bit off topic, but fyi Stephen, the mailhide widget at the bottom of your "About" page seems to be broken. I browsed your site beyond the article you submitted and wanted to mention that you may be able to use Ctrl-[ as a substitute for the missing Escape key on your iPad pro. I do that a lot on normal keyboards just to avoid the pivot movement and stay on the home row, as it's just a simple pinky stretch (assuming Caps Lock as an additional Control), and also map Ctrl-] to be the tmux escape for the same reason.