Hmmm, I couldn't say there definitely wouldn't be any issues with that, Hetzen. If you look at the 'extreme close up 1' image on page 1, you'll see halfway across the width of the image(most noticeable at the right hand side) that there were some displacement discrepancies between render buckets, there's a sharp cut-off. That was the only time I've came across the problem, mind you. I think it was just a random render error, the next image below it doesn't suffer the same problem but I had also used a different AA on that one so, I've no way to say for sure.
There are often slight differences in subtle displacement details between renders of fake stones and such. You could always try and, I suppose, motion blur would minimize any major discrepancies, were you to animate it.
And, of course, you also couldn't use the current public's RTE rendering for this shader either.