This performed much better than I was expecting it to at Apoc and I ended up using in a third of the rounds throughout the day. The only issue I had was the hooks on this particular shoulder strap are too small and were bending over time. They came unhooked once or twice and I had to reverse them to get it from happening again. I'll need to switch to more robust hardware.
It was also very amusing to have to demonstrate its function to everyone as it befuddled pretty much everyone that looked at it. No amount of explaining functioning was a substitute for them just seeing it work.
Unfortunately I did not get to take a video of the function while at the war. So here's one from tonight.