The quality it really good on the higer res Sony CCD models, but you will notice the camera is a little slower to adjust from light to dark than a normal camcorder. I did have some footage somewhere, but that was heavily compressed.

The biggest problem with mounting it in the bumper will be vibration. I wrap mine in some gel stuff we use in the cable joints at work and then strap it down, this cuts out most of it, to give you an idea you can see a very quick clip from the Heli here, but remember I was using a 2.4Ghz link for the downfeed, so that reduces the quality also, but still very very watchable.

I see what you mean about having the camera in wet conditions, but a fixed angle is going to be pretty boring on playback. I have found the suction mount more useful than the bullet cam, and in the wet the camera won't need much before you need to stop and wipe all the muck off the front.

Cheers

Cris.