In reply to GridNorth: I've had a pair of Forces since 2010, review of them here:
http://www.ukclimbing.com/gear/review.php?id=2947
They've been superb but are pretty worn now and I'm quite miffed I can't find any in my size anymore - the Force X fits totally differently, and in my case "doesn't fit". I don't climb that hard, but I've climbed to 6b and E2 in mine, but have also worn them on 13 pitch routes in comfort.