I have grown really tired of carrying a gripped 60D or 5D on a neck strap. Today, I installed a Canon E1 hand strap on each. I am kind of surprised how loose I have to leave them in order to be able to reach all the controls, especially on the 60D. I sort of like them, so far. One modification I came across was adding a carabiner for the times when I need a both hands free.
My question is, do these things stay on? With it properly installed, I have about 1" of nylon strap coming from each direction through the buckle-thingy. That does not seem really secure to me. Do you folks trust that to stay? Do you modify it somehow to make it more secure? I would really hate to drop a 60D and 70-200 2.8 because of 1" of slippage. Any tips?