If you haven't played the hl2 VR mod yet you are in for a treat. I think I enjoyed them more than alyx. In fact when hl2 first came out I bounced off it and only got about 1/3 of the way through, wasn't for me, but with the VR mod I played all the way through and did ep1&2 as well. It's like they were always made for VR.
Just use the cheats to skip the driving section which a pretty puke worthy even with all the motion sickness helpers turned on.