Since one year I have this Oregon Scientifics Cam and I woundered if it was possible to fix it on my helmet.
After an half hour I just did. I had to remove the filling, but it is very simple with a Petzl helmet. After having drilled four holes, I could fasten the camera.
I do not know how that feels when climbing but I feel that he is a bit heavy on one side ... I hope I don't get neck problems!
Within three weeks I'll go climbing in southern France and then I know more!