@Scawen: as Valve is preparing to launch their own VR headset, maybe you can check with them, how badly they would want to go out of their common legal work to meet your needs for some kind of inclusion...
I think I see like more issues with this (IMO it's very unlikely this will work for both sides), but who knows...
From the "leaked" info it doesn't seem Valve has any strong SW lineup for it, which I'm a bit puzzled with, how they want to push that HW, and maybe they can at least somehow add demo version as some kind of "check if it works with this", etc... even if you don't enter steam directly.
Also it means you will have to check VR version against new HW soon, maybe they can send you some unit at least.