So I had the idea to set up a cloned bottle and choose the 0.14.0.5.7782 DX 10 version inside of steam (according to the instructions over in the DX 0 thread) and surprise surprise, it works too.
Takes a little bit of trying, it first crashed at startup, with an error message telling that the system graphics panel was changing anti-aliasing settings. I tried turning the graphics settings down and turning off the DXVK backend option.
Throws multiple errors when opening new environments but keeps on running. Will post screenshots (with 0.14.0.5.7782 DX 10 indicated on them).
By the way yes I tried the newest (DXVK) Beam NG version first of course. So far no luck. But I guesstimate it wasn't that far off, might work with some fiddling around.