I bought this strap 5 months ago.  I thought $24 bucks seemed a little expensive, but decided to go with it.  I just got back from a vacation where I carried my camera equipment all day for two weeks straight, and I'm so glad I spent the money -- it's proved it's worth every penny.  It's non-slip (ok, it slips a little, but nothing like my last strap) and it has some give to it that makes even a heavy bag seem a little lighter.  I definitely recommend it.