"And Zak isn't Keith Moon either" Probably not a bad thing, if you're at all concerned about liver function and life expectancy.
Zak is a darned decent drummer, that's for sure. And The Who's a darned good choice if he's gonna play with 1/2 of an elderly/legendary band ('cause he might have a small problem displacing the drummer of the other 1/2-strength elderly & legendary group of that era...)