Gun Camera Review Video

[PTMCCAIN]

Hey guys, I picked up a Contour Roam camera, on sale from Daniel Defense, a good discount, since it includes the rail mounting accessory. I gave it a work out, with mixed results, on a shotgun, pistol and on a M4 with rail system. Here are the results:

http://www.youtube.com/watch?v=nCj-dE6vyzI

Question for ya'll:
Do you, or have you, used a gun camera? If so, which one, and how have you found it useful to you? Etc. Care to share any videos?

Thanks.