I've briefly used one of those. It's a cool little device once you get used to it, but there's definitely a learning curve. By comparison, it's hard to understate how intuitive VR headsets are for controlling your camera. That might not matter for professional drafters, but it would certainly make 3D modelling more accessible to the public in general. I can imagine a future in which 3D models are created and used much like images are used today.