@Aether Tbh, I would try a live distribution of the Linux Zen kernel (Garuda is a decent choice) and see what all works. That said, the disclaimers on the surface kernel you posted are notable.
VR is less adventurous than it was a year or two ago. For your hardware, I'd expect it might work out of the box on the Zen kernel.
I will literally sit on call with you sometime if you need to build a custom kernel btw. It's not too scary, but it has knobs to know about.
@Goldkin Yeah like honestly I think it's *plausible* that if you can code it, you can get Linux working on anything. Including the fiddlier hardware.
I just can't code it. :v
@Aether Also SAI should work with Proton or Wine, so that shouldn't be an issue