I like to practice my video skills by making short vignettes using a go pro mounted on a flexible JOBY Gorilla tripod that wraps around the bars.
I shoot straight ahead shots this way but hold it in one hand to mix up various angles and perspectives and to dampen vibration.

Here's a pic



The tripod also has a mounting adapter for a camera which I use for stability on the ground so I could mount it as you do but I wouldn't use it in that way. It seems like taking pictures of random stuff in a way that rolls the dice as to composition and quality. To me the whole idea of a camera is to take a particular shot and get the best quality possible. If I want a still shot I stop and pull my camera from the handle bar bag.

Touring Camera thread here: http://www.bikeforums.net/touring/10...-use-tour.html