For me, VR is bigger than even ED!
I won't make my decision dependent on whether or not ED will support the HMD of my choice (especially not at launch).
If they do support it - and I have no doubt they will, at some point in the future - even better! But there are many other features that influence my decision (price, image quality, wearing compfort, hygiene, controllers, other programs,...) and there is no way I will let a single game take this decision away from me - not even a game as awesome as ED!
If I have to wait... well, there are and will be plenty of other worthwhile experiences for VR.
Okay, and now I will get prepared to be shunned in this forum...