Might be fun for quick 3D sketches of a part.Not sure why you would want to draw via VR? Currently the tools you use are not precise enough to draw something usable. As mentioned above, tilt brush is very cool but it's more like water colors or oil paints. Not sure how well that would print.
There are export options to allow you to 3D print Tilt Brush objects too. This looks like they're doing 3D CAD in virtual space in a way that's explicitly meant to be prototyped though. Tilt Brush has always been more of an artist's tool.So like Google Tilt Brush, but with the added ability of 3D printing....nice.