Fair enough, it seems there are different ways to skin the metaphorical cat. I like to (try to) play melodic single stroke rolls around the toms ala Tony Williams and the no rebound practice helps with that. But you're right, it's not essential to have that ability.
well, i I think it is essential to have that ability, but feel like there are more ways than one to get to it, like you said.
we as educators need to make sure that we tell people ALL of the info about using a certain practice technique other than just: "do this, and you will play like Tony Williams". I think the bigger issue is in that area.