The resolution of the Vision is probably not high enough for that. The Micro-OLED screens themselves are something like 4k, but that's stretched over the entire field of view. The CRT screen would cover just a small fraction of that.
Depend how close you are, the resolution of the CRT etc. There's also the temporal accumulation from the micro-movements the head makes, so you're never sampling a fixed grid.
It's already quite effective in EmuVR even on lower end HMDs, get close enough to the virtual TVs and you can see the individual RGB phosphor dots. Moire is pretty bad at a distance though.
