I shot this video with the Replay Prime X in a chest pack mount from First Light Flashlights. The whole rig is one we use in our consulting business and it works great for shooting hands free vids where a head mount camera might be a problem. The other major component is a Peak Design camera mount made for straps on packs and other gear but it works extrmemely well with the First Light chest pack needing zero modifications in either piece of gear. The chest pack was designed by First Light as a medics pouch for the military. I've got mine set up with the camera and then a First Light Tomahawk under it, either the camera or light can be mounted or dismounted in a moment yet stay secure all day if need be. I've attached a quick shot of the chest pack in place. Both the light and camera mount offer numerous changes in angle and direction. In place the camera works through my iPhone so I can frame the shot and control it. The camera will shoot stills or video and with a 64 gig card have enough room for nearly six hours of HD video or over 10K 16mb photos.
http://youtu.be/ySXwRFiZYbA
http://youtu.be/ySXwRFiZYbA