I have a VIO system that I'm going to sell... my new vholdr arrives today and sunday will be the first test of it in the field. I'll post the video on vimeo probably.
The VIO works very well and it has a nice screen to make sure you're getting results but its just too heavy (2lbs) for human powered backcountry use imho. The vholdr is 4oz., higher resolution (1080p), and doesn't have an external recorder pack. I just hope it mounts on my helmet properly.
Here's some VIO results from last season, forgive the bad editing, it was my first try. Next time I'll cut out way more waiting-for-partner time. Skip to 5:53 and 8:40 for the best action.
http://www.youtube.com/watch?v=WC2DYdfkOzM