I just watched this scene and it was amazing. This is my definition of good VR. It wasn't long and still told a great story. I do like longer scenes. Although it looked like they might have wanted it longer. The reverse cowgirl started for 10 seconds and then they just cut to other position.
If this was her first time directing than she already understands the medium better than most. Maybe a female director can see what some of us are looking for in immersion.