The folks in 3d printing helped me out greatly with this, and I was able to mash this together today. I haven’t printed or tested it yet, but it’s designed to be used with the quad mag ring. I’m going to use some very thin and strong 3m adhesive tape I have to ensure it is secure to the phone, and use for a quadlock mount on the bike if it actually works.
Perhaps this niche case will be useful for someone else?
PLA is pretty brittle but rigid. So it won’t easily let your phone out of the case, but should it fall, I fully expect PLA to crack. PET-G is complete opposite. Elastic but strong.
If it breaks I will try to print out of petg. I may have to print somewhere else, because the printers I have access to I’m only allowed to print PLA AFAIK. I’m hoping the skin (besides looking cool - it’s an xray image of the phone) also reinforces and buffers any impact/fall.