They're finally getting the software together, so I heard, and I must say that multi-res shading looks pretty interesting. However they still lack fine-grained preemption in their current (Maxwell and previous) hardware - and it won't be seen until Pascal at the earliest.
According to a dev I spoke to, the best "current" cards ie cards with the best preemption for VR are Fury X, 380/285 (the GCN 1.2 cards) so anyone buying for VR now should consider those. The 380/285 is slightly underpowered according to Oculus who recommend a 290, however two 285's/380's will be more than good enough and funnily enough I heard a rumour that a dual card of these chips is coming soon...
After that you want cards like the 390X, 290X, 390, 290, 295X2 (GCN 1.1). All current Nvidia cards are basically lacking the required hardware for fine-grained preemption and are inferior to all of those.
According to the dev, GameWorks VR will still be used alongside LiquidVR in the launch games because it's still better than the base Oculus SDK. He also said "The game devs want you to play these games on AMD, because Nvidia can't provide the same experience."
Just be aware that Nvidia will be selling you VR all over again in 18 months time with Pascal. Don't buy any current generation Nvidia card in the belief that it'll give you the best VR experience once it takes off. It won't, they are fundamentally lacking the hardware in any card they have right now.
