I went with code-only approach (no binary assets) and built a primitive development environment that works in VR. Now I have a neat little virtual shed with different experiments and demo projects. Geometrical landscapes, driving & flying, teleporting, various gizmos...
Currently I'm tweaking physics engine to work with hand tracking skeleton. Masses connected with springs turn out to be amazingly palpable even without any haptic feedback and with simple cartoonish visuals.
VR is already fun and we're in for a wild ride once AR hits the market.