refresh rate seems to be 70hz, isn't that below the absolute minimum?
I think this is probably personal preference, similar to VR sickness. I seem to be able to tolerate less than "perfect" conditions better than most, but for some people if it's the smallest bit off they suffer.
It's interesting and I hope it succeeds. I was wary when the specs said up to 100 degrees fov. IT looked heavy and not very comfortable but that remains to be seen. I personally don't have the slightest desire for it at this point.