You're so right. He's also the first rock musician I heard use the F word in public (it wasn't an essential part of the inter-song chat in 1970 like it is now). It was Earls Court in London, during his big solo they put a strobe on him. So he slams the sticks down on the toms, "switch that thing off!". Strobe goes off, Hiseman picks up where he left off. 2 minutes later the strobe's back. Sticks slam down again, "will you switch that F**in' thing off!!" Exit strobe, and he still did a brilliant solo.