One of the tracks on the new album has a big band swing rhythm together with a fusion rock rhythm. Take his single stroke roll thing, from very loud to very soft. I can do that roll at the same speed, but I can't keep it going anywhere near as long. I make it one of the highlights of my solo now, because very few people can actually play it. If you can play singles right, everything else comes easy.
Doubles are a doddle.
Once you've got your doubles, go and make it difficult again. Go on threes. Get that rolling, and rhythmically you find a whole lot more possibilities. Play triplets with each hand and your hands seem to be in slow motion. It's very confusing to watch.