Attached Link: Monsoon's place.....

It can be done. Displacement is indeed slower getting started because of the calculations but it's compounded greatly by atmospheric effects. So I've been sticking with the standard models. The only crashes I have now are when using layers with displacement. We'll see what the next upgrade brings in that area....

Here's an example using only mixed materials and only procedurals. No bitmaps although I am quite fond of using them. Here the work was done mainly with the wavelengths in the function editor and with filters. I'm really liking filter play...

Only one of the mixed materials is displaced..the other rides on the bump....

The mat is available in the download section of my website. Please help yourself and take it apart to see what I did and experiment. The render time for this pic on 'final' was just over 12 minutes.

Monsoon