I've knocked out 7 Genestealers so far with the Contrast paints. I'm using Volpus Pink and Ultramarine Blue then giving them a wash of Nuln oil at the end. I'm quite happy with the results and have 21 more stealers to knock out by November for Monolith-co.
Also had the sorcerer from Dark World and decided to try him out. I really like how the contrasts worked on him, and give him a very bright and vibrant 80/90s look.
I think I'm sold on Contrast paints, and will continue to experiment and get the most out of them.