Yeah, other than that goofy looking Gibson J 2000 acoustic he's always played, Pete's always been a nomad gear-wise. He'll get onto something for 2-3 years and then run off to something else. He's been associated with a ton of manufacturers at some point ... Fender Strats and Teles, Rickenbacker semi hollow bodies, Gibson (SG and LP), those stupid Schecter Tele copies he played in the 80s. Unlike a lot of players from his generation, I don't think Pete's much of a gear head. He certainly doesn't name his guitars the way Clapton and Richards do.
I know Pete likes those EC Strats for the same reason a lot of players do ... the built in Mid-range booster is sweet as heck.
Sad to hear that the Stones sound team couldn't get a good mix the other night. I know they employ the best in the biz, so that's really disappointing. You used to expect crappy sound quality at stadium shows, but things have changed so much in PA equipment that you expect good audio in any setting these days. I know US had probably the most impressive live stadium sound I've ever heard back on that last tour when they played Carter Finley. Just ridiculous clarity ... even when Muse's bass player was bashing away in three octaves at once.