I purchased the BlackBerry Curve Leather Holster in late August 2011.  I was initially pleased, as it looks nice and the automatic off feature worked.  However, within 60 days the leather strap cracked where it folds across the top of the leather and across the Blackberry.  The seller offered to exchange it for another, but (1) that would leave me without a holster during the process, and (2) the cost of shipping it back would amount to a substantial percentage of the price.  I have chosen instead to cover the crack with black electrical tape, while waiting for the genuine BlackBerry original replacement I ordered.  I just noticed that the strap has now cracked in a second place, where the strap curves across the front edge of the BlackBerry and back down.  I should also mention that the chrome Sprint logo fell off the strap very early on, which did not bother me.  FYI, I wear the holster on my belt, on my right side.  The only significant stress it gets might be when I fasten the auto seatbelt across it.