I've been a colemak user for a number of years, which has similar pros and cons. I would say that it is not worth it for most people to change. You could get a lot of the benefit of colemak, with none of the pain, by converting your caps lock key into a second backspace. The benefits are that it is slightly more comfortable, and you'll have less people trying to use your computer. Also, prior to learning colemak, I h…
I did try Dvorak before Colemak and really hated it. Not only was Ctrl+XCVZ a pain, I found that my left pinky got very strained because of the position of the L key which is a very common letter in the English language.
After learning Colemak, I tried practicing QWERTY occasionally to be "bi-keyboard" but I just could not do it. The more I practiced QWERTY, the worse I got with Colemak. So eventually I had to drop QWERTY. Now, whenever I use someone else's computer (usually just to do a small task), I have to hunt-and-peck and it makes me sad.