I find the jj/jk hack a bit too clever for my taste. I just map CapsLock to Escape system-wide because it also unlocks quick escaping for shells vi-modes too and I realized that actually Escape is a really nice key to have around in a lot of UIs to get out/go back/cancel what you are doing. I also like that it's a simple gui setting away (or registry key editing in windows).

I either put CapsLock where Escape sits or use both shifts simultaneously (one cancels it) but even then I almost never use it. The rare times I need to type a lot of uppercase together is generally code in vim and visual selection + gU does the job.

The point of my comment was not to shill for a particular solution though but for the vim community to acknowledge the problem publicly instead of it being some insider knowledge you discover in a random internet comment six months into fighting vim (if you haven't dropped out yet)