This is a great product, making my life so much easier as a student musician, having to constantly add and remove hi hats to a stand this more than halves the time taken. Not a massive saving on an individual basis, but definitely adds up over time. Would not go back to a normal clutch from now on.
Side Note: It took me a few days to get to grips with the mechanism and get it up to speed, but once you have it is like riding a bike - your not gonna forget it in a hurry.