Well according to @Pimel there is no distortion at all on XTAL, as for whether distortion and the incorrect world scale/depth issue being the same thing or different things to distortion on Pimax headsets is yet to be seen.
One thing for sure is having a lower IPD range would mean you likely have greater binocular overlap and more easily experience the “3d effect”, compared to wider IPD users. This might explain why some users don’t get the “depth experience” with Pimax. Their eyes might not fit within the binocular overlap range to experience the 3d effect.
The Xtal was a weird experience.
Firstly, the thing is huge. Not heavy per se but a chunk bigger than Pimax.
Then there is the black borders, vertical the screen is really small, they focussed only on the horizontal and I think Pimax is bigger there too.The one thing the headset really stood out for in my opinion is the clarity from left to right. No distortion at all and no sweet spot either I think, the whole thing was clear.