Shot some more video the other weekend. This is from the Hero 2 on the shoulder mount. I didn't do much with editing the video... it is rough and just shows a few different scenes. In some of it, I am scrambling to manipulate a lift bag, so I have a lot of arm and upper body movement that would not be typical of a normal sight seeing diver. Also, I just wore the thing and ignored it. I did not try to aim the camera or hold my body still. I had a camera on my head too (not shown in this video) and I was mostly concerned with getting some video on the head camera..
Also, I am still wearing it on the right shoulder and the primary regulator hose is still an issue, but not so much on this dive for some reason. It was my intent to run the hose under my arm and eliminate any conflict, but the hose was too short for that, it was uncomfortable and impractical, so I abandoned that idea within a few moments.
So far it is the least obtrusive mount I have used, You can pretty much forget about it, but you should check after doing a back roll entry, etc, to confirm that the camera is still in alignment and aimed properly. You can't crank it down super tight because you may want to adjust the angle as you body position changes, so it needs to be loose enough to do that. I don't think I adjusted the angle, nor even checked it for this dive.
My conclusion... it seems like another tool in the Go Pro box of tricks. I really think the regulator hose issue needs to be worked out. Also the mount sticks out off your shoulder (increasing the diver's width), so this would be a hindrance when entering wrecks. The mount seems well built and stable and I didn't even consider using the safety lanyard it comes with.. I could tell it was not necessary for my kind of diving.
[video=youtube_share;DMGBvuCFNV8]http://youtu.be/DMGBvuCFNV8[/video]