Cycle Cameras / Helmet Cams (GoPro, Drift, Veho, Contour, Fly6, Fly12, SJCAM, Apeman, 1080p, etc.)

I'm not sure.
One of the things that makes cameras like the gopro so popular with people in the extreme sports world is the ease of mounting and hugs range of accessories available.
For cycling most of us would use a simple headmount, might look like a twerp riding around with a large phone looking thing on your head.
I'd say you should go for it.

I always think that bullet cams look best on a bike or helmet. Those mini square box things just look ridiculous!

Also, I go for 5 hour rides in the woods and most of them die after two hours, or so.