From Manuel in Augsburg, Germany. We've met a couple of times in my travels— in Berlin and in Augsburg, and I got to help him put together a really nice set of Cymbal & Gong cymbals— a 22" ride and some other things. He's sent in a little Chaffee-esque library of all possible combinations of two-note patterns for four limbs:
Manuel says “I practice it on the set as a warm-up to 'remove friction' (as some authors put it) and to work on balance between the different volume levels of Ride, Snare, Bass and Hi Hat.”
I may try it— I always had a problem with things like this (see Chaffee's Time Functioning book, Dahlgren & Fine), because I wouldn't know when it was OK to stop. Now I'm more able to just play through something once. Get through it in however long is reasonable.