Not to spoil your fun, but have you tried it with broadheads yet, Mudd? I found that with a back quiver that close to vertical, my broadheads wanted to grab on the way out. I kept fiddling with the Bear quiver until I found that having it angled across my back, more like Nate Steen does in the pictures posted in another thread allowed me to draw the arrows out more to the side. This both eliminated the drag but also made the quiver bump easier.
I ask because drawing field points over the top of the shoulder like you are was no problem. Part of the problem for me was I have a 28" draw but relatively short arms and less flexibility than I did 40 years ago or so. So dragging my rather longish arrows with broadheads attached over the top didn't work so well.
I'd get them most of the way out, then have to start pulling them down and the broadheads would drag on the back of the quiver. At worst, they kind of hung up. At best, they were kind of noisy. I noticed in your video that you kind of do the same thing with your field points, so I wondered if you would have the same issue.
The one I finally built lays so that the arrows are closer to the point of my shoulder than to my head. Then a slight bump puts the nock in my hand. I let go of the quiver and it drops down a bit, which helps with drawing the arrow out.
I hope your way keeps working for you, but thought you might want to try things out before you head to the woods.
Russ