Hmmm. I have a totally different view of this. I see photos as a net benefit to the band in the form of promotion. If they have a no photo policy, I'll not only gladly leave my gear behind, I won't even do them the favor of posting cell phone pic to facebook or even a status update to promote them. Their loss, not mine.
On the other hand, if they have an open photo policy I'll gladly pack a bunch of gear and shoot lots of fun pics and share them with lots of people so they can see how much fun I had and they too may want to go.
I am serious....and don't call me Shirley.
Canon 7D and a bunch of other stuff