I purchased the contour roam 2. I really enjoyed the quality of the videos, but one time I fell and it came off. The mount didn't come off, it just slid right off the ridges. After loosing 200 dollars never thought of buying another one.
You didn't have to safety strap mounted?!?
I attach mine to the goggle strap or the helmet, if the mount or the camera fall off at least they're still attached. Haven't lost a camera yet...