Well I've seen the livestream and I was quite impressed, tbh. There are quite a few features for things like position/angle snapping placement helpers, and the guy showcasing it didn't seem as helpless as in the video sivan posted. They also said that navigating around is actually faster using the VR mode, not sure if that's true, though.
In the end you can't really tell whether it's garbage or super useful without having tested it.