I guess on the Intuos and similar Wacom models you could map this functionality to the touch ring or even touch gestures. Can't speak for how well that works though. I'd always just use the keyboard for it.
That sort of thing is has always been the main problem I have with modeling in Blender. I can't even figure out how to select two verts and cut and edge into the quad - having to select bits of a ring, do 'subdivide' on them and merge the results is kind of an oblong process. I probably just don't know all the tools. There…