I currently run with a GoPro on the handlebar. For a commuter, I find that their mount sucks for few reasons.

I am not about to leave the camera (or waterproof housing) on the handlebar when I park the bike. To get the camera off, I have to unscrew the camera from the mount. As luck would have it, I lost the screw once. So I had a choice to make, buy a replacement from GoPro (which isn't available as an individual part), or make my own.

To get the part, you have to buy the grab bag of mounts ($20.00) and you only get one replacement. To make the part, I was able to find a screw and a plastic thumbscrew part from ACE Hardware (a couple of bucks), but it didn't work so well. I did get lucky though, and was able to find the original screw I lost. I've since taken the precaution to tether the screw, but that occasionally gets in the way of unscrewing it, and slows me down even more. I've asked GoPro to come up with a mount that is similar to the NR MiNewt Cordless lights that would allow us to clip the camera in and out.

Due to the used nature of the camera I bought ($40 USD), I had to buy the Battery BacPac to charge the battery, and it gives me the time needed for my uses of the camera. With the BacPac attached, the camera likes to rotate down as I hit various (and normal) bumps in the road (esp. at the speeds I hit on the downhill segment (35-45mph)). To prevent this I have to tether the camera mount to prevent myself from having boring videos of my tire rolling and the asphalt under it.

I'm monitoring the video channel of Techmoan for the waterproof DKV808 camera that he mentioned in one of his more recent videos that the manufacturer is supposed to coming out with soon.