Oh, I've played plenty of shows in my day and very quickly learned to trust the soundman (or at least not worry about what the PA sounds like). When you're playing live your #1 consideration has to be playing the songs right, not worrying about your sound.
Basically when recording I get really really anal about guitar midrange, often to the point of forgetting that a lot of the guitar tones I really like (Gojira, Behemoth, Mogwai) are practically nothing BUT kinda honky mids.