ALVR was functional but had an issue with displaying the game too brightly.
WiVRn worked much better, streamed very clearly. There was a controller issue at first where the left and right lower face buttons cause the view to rotate 90 degrees; difficult to work with as those buttons also serve a gameplay purpose when holding the pistol or syringe. This was fixed by downloading and compiling the latest version of XRizer (v0.2 at time of writing) and adding it to the launch options as VR_OVERRIDE=/home/<myhomedirectory>/xrizer/target/release/ . Now it works fantastically, best way to play the game on Linux so far!