I got a used seat post and bolted the head to it.
I rode it up to Mt Pollux to test both the tripod mount and the format adapter under real world conditions. The mount worked perfectly, and was easy and quick to set up. The bike itself started to sink into the snow and list to port after a while, but I was able to compensate by adjusting the pan head axes. You can see my shadow on the right, showing the umbrella I have attached to my body to shade the canvas and palette.