Yes I totally agree, sercho beat me to it!
>"Obviously this would only be for gigs with the size to actually have a discernible stereo field in the mix."
IMO it's the smaller gigs that have a discernable stereo field, because the room is smaller, and therefore the audience can hear the sound bouncing around the room as well as directly from both L and R speakers.
At the bigger gigs, they often don't even run stereo, because the crowd only really hears the speakers they are closest to.
Well when the venue is very small (enough to not-mikin' the cabs) or narrow or has a special architecture in which a stereo set-up can work (I cannot think of one ATM), I guess I could live with that hehe