DisplayLink already has a working wireless adapter for the Vive. I've tried it, and it's really good. No need for gimmicky backback computers or non-replacable headset computers.
I thought the issue with current wireless technology was getting the latency down, in order to work with true ~90hz refresh (so when you tilt your head looking at the horizon, or move your head quickly the display updates in seemingly real-time, not showing you one or two frames of old data).