Overall it's pretty awesome and gives me a reason to play the game again.
It's still easy to use but like the UI when you move your head the tracker moves so it's not 100% ideal. It would also be nice if the motion tracker was a little closer to the center of the screen instead of the left hand side and down from center a bit. That will make sense if you have played the game before. It's not as big an issue as the UI but it can be hard to read the number for distance from the moving object. The other issue I have is the motion tracker. Not a super huge deal for this particular game but hopefully it can be fixed or at least moved closer to your normal field of vision. My only complaints are the UI of the game is really hard to read because like on a tv it's in the bottom corner and moving your head just moves the UI. So after an hour I had no discomfort at all, I usually don't but this is a mod and not something fully finished by the dev team so you never know. I am going to install the anti aliasing mod though because that games aliasing issues were bearable in a TV but take away some of the immersion of VR.
Just tested it out for about an hour and I loved it.
