Awesomeness! I bet if there was a women-only climbing session, you'd get a lot of interest from non-Muslim women too.

A bunch of the London walls have women-only drop-in sessions with an instructor on hand to offer tips, and they seem to be very popular.

The wall I go to started one, and on the first evening, the woman leading it was standing there in a state of shock because she'd expected maybe five or six women to turn up and got ... forty. They ended up shutting off an entire section of the wall for it.