I don’t know about expert, but he does play the sax.
The bit about not inhaling is true, too, according to Christopher Hitchens, who was his classmate at Oxford. Apparently Bill had bad reactions to smoke and preferred edibles.
James Doohan (aka “Scotty” from Star Trek) served in the Canadian army during WWII. His very first combat experience was at D-Day, where he killed two snipers, led his men through a mine field, and took six bullets (four in the leg, one in the chest, and one through his middle finger). The bullet to his chest was stopped by a cigarette case, but his middle finger had to be amputated (which is presumably why he never just told Shatner to fuck off).