Bike Pump Mount

I have a mountain bike and a road bike. I have a great pump I purchased about 25 years ago. It is a pain to change the pump mount from one bike to the other when I switch bikes.
I created this bike pump mount and clip, to mount the pump on the second bike.
The pump clicks into place and is held very firmly. The clip is just extra insurance it does not come off on the road.
I need to get better velcro for the clip. I am using a wire tie velco strip and it is too small, and not double ended. Currently I take the velcro and twist it before putting it through the clip and it holds.