I have never just pulled a leaf off and rooted it, but I have successfully separated sections of the clumps and transplanted them. I was looking at one of my heucheras that is about five years old yesterday, and was thinking it looked like there was about five sections (groupings) of leaves within that one plant and I should divide it so I can transplant some elsewhere. If I get a chance in the next few weeks, I hope to do some of that.
