[Anthony-G]

I used to do this and really enjoyed the convenience.

Whenever I resume a Vim session (from another window/terminal), I have a habit of automatically pressing the (Escape) key to ensure I'm in Normal mode. However, every now and again, I have to use Vim on someone else's computer and muscle memory would cause me to press CapsLock instead of Escape. Then pressing 'h' moves the cursor all the way to the top of the screen instead of one space to the left, pressing 'j' joins the current line to the following one instead of moving the cursor, etc. Because I'm used to typing normal mode keys in quick succession, I've already entered 4 or 5 normal commands before I realise it's all going horribly wrong. I press 'u' a few times to undo the craziness but successive presses of 'U' only undoes the previous Undo action!

In the end, I retrained myself to use Ctrl-[ which isn't quite as convenient but does work on all platforms I've had to use.