I tried it and it ran for about ten seconds, with a 3D environment but all objects appearing as flat cut outs in the 3D world. Then after I took a few steps it crashed to desktop.
If this can even run as well (like as well as Bioshock infinite) even at like 50 fps with motion smoothing working out the rest, I would buy this game just for the experience of online multiplayer VR in a new fallout environment.