If LIV support enabled, you mean the latest downloaded build, then yes I do believe it's active. Unless there is something else I was supposed to do in game. I did try out the graphic change options within the AR HUD before getting in the cruiser. Not sure if this caused it either. I am using the Vive.
Anyway, I love seeing this game evolve, it gets better and better. Looking forward to the patch in the next few days.