Hmm... I do see it, but when I left my comment last night it would seem I had been looking at the grayscale version of the color noise image by mistake. I can still make it out in the blue noise image but it's quite a bit more eyestrain-inducing.
The grayscale version is indeed the clearest, for the blue noise instead I suspect that it's impossible to see the 3d effect, maybe because the pattern is too dense and regular
That's why I'm surprised if you do see it
Not GP, but I can see. Not comfortably though and my eyes want to refocus so I have to expend conscious effort to keep looking at it - unlike most other stereograms where once locked in the effect remains almost effortlessly.