The resolution is inferior - especially for high quality film cameras. They were using it cuz there wasn't anything else. Sony just came out with a pro HD helmet cam that goes for $4,000. I've talked to a bunch of these companies including the really big one, at SIA this January. They all are looking for an HD camera. And the Contour is the only HD camera. I'm a director myself and I shoot all over the world mainly on 35mm but more and more on HD. And I'm telling you, the resolution of the POV cam is inferior. 1280x720 vs 720x480. No contest.
Yes, the screen is nice to replay it, but honestly, only about half of all the users do that while they ride. The others want an easy to use, simple camera. The ContourHD has lasers that tells you were youw are pointing. I'd rather do that than pull out the recorder every five minutes to see what I shot. As you will know, there is very little "setting up" on helmet cameras. Wide angle, off you go. It's a dynamic shot whith little to set up.
And finally, some pro snowboarders are very unhappy about the cable because it hinders their mobility, tricks and jumps. Plus they have to stow the recorder somewhere.
I'm not saying the POV is a bad camera, but it has its drawbacks like all cameras. You just have to choose wich drawbacks you can live with. ContourHD takes less footage, battery runs out faster and it's not water-proof (for rafting, surfing etc). So the choice is yours, but it's only your choice.
I say, rent them. Insure it. If it breaks, whatever. No sweat. Plu,s you're not stuck with yesterdays technology.