The Sun-Sniper fixes the reliably. I have no problems even after 4 or more hours.
Pro:
-wertig
-great, rotatable anchoring to the camera
-very convenient
Camera hangs better protected on the side of the body
Neutral:
-If you work with a tripod you need a tripod plate with additional screw
I use the Custom SLR M-Plate Quick Release Plate (see my review)
Cons: Nothing
I am fully satisfied and would buy it again.