So, this was the idea.
It was, to be generous, not a screaming success. As I rode to the
trailhead, the camera could be seen visibly vibrating from the bumps in
the roadway. My feeling is that the idea is good, but the
composite material of the blinkie-mount allowed the vibration.
The same execution in aluminum or stiff material (pvc?) might prevent
it. Most of the video is pretty much headache-inducing, so it’s
not that much of an improvement over the hand-held-while-riding-fixed