I have been looking high and low for this type device. Your idea is good but would be better if it incorporated slots for a camera strap. I wear my tripod collar at parallel with the camera body. The collar is on the side of the lens, like when mounted to a Wimberly Sidekick. That way you can carry it under your arm and quickly bring it up to shoot something. It carries much better than collar to the ground, when walking that is.