Oculus don’t support headsets on macOS. The only Mac solution at the moment is what I described, where you install Bootcamp and run the Mac as a Windows 10 machine.
The performance of the Rift interface isn’t always good, but when you get into the SketchUp viewer it’s tolerable.
There are other ways in which VR can be done, and I hope that we are investigating those, but I wouldn’t expect progress on that any time soon, at least while headset manufacturers are only interested in PC.