As a follow-up, we were out riding with some folks who ride a Co-Motion Supremo this past weekend and I did note that Co-Motion placed a pump peg behind the captain's seat tube, just above the boom tube. I'll have to look at a few more frames to see what Co-Motion owners are doing for pumps as I don't recall seeing too many that carry the pump held in suspension along the top of the boom tube. Then again, I'm not always that observant about certain things.
Mark