I play in a 9 piece corporate event/wedding band. Once in a while, one of the big shots in the corporation, or the "best man" will ask if they can come up and play a song. NOBODY plays our band leader's guitar. Never, ever. So when it happens, he usually asks me if the guy can play mine.... (If I'm playing a PRS, he won't even suggest it.) Most of the time, I bring easily replaceable/indestructible Stratocasters, so I say OK. (I want the audience to think we're nice folks, and not a bunch of pricks.) Never have I had a bad player attempt. We're a very good band, and it takes balls to want to participate onstage with us. One night, some corporate VP type guy wanted to play, and leader asks me if it's OK.... "Yeah, sure". Well, I think the guy wanted to play the leader's Gibson, because when I handed him my p*ssy pink Squier Strat, he looked totally dejected. (BTW This is a very fine, MIJ Squier with full boutique components.) He looked really embarrassed playing a pink guitar in front of his corporate buddies, but the guy flat out ripped! I could practice 100 hours a day, and never play like that! I'm always a little apprehensive, letting a stranger play my axes, but so far, nothing bad has happened. And once in a while, I get to hear my guitar in someone else's hands. How do y'all feel about strangers sitting in, and playing your gear?