Frankly I'm amazed this one has slipped by every engine after it was again introduced in Vray, after all the help it gave in the form of VrayPattern. Bought it the second it was available and the memory handling was just beautiful. FYI as I recall, it's not a memory-friendly tool to substitute to scattering forests or the like, rather very efficient for close up details like fabric of the like. Anything on the foreground benefitted of the original one and the forest patterns were on par with the usual pattern mehods. I mean it is really efficient with memory usage but don't expect it to be any better when scattering large areas. That's how it's been with Vray and FStorm, at least :)