Hi Dima,
It was using fallof together with mask (I think using Composite Map). I don't remember the exact order.
The point was that people often use fallof in same intensity for one fabric, but something like Suede will have different strength depending on orientation of fibers.
With the latest CoronaPhysical material, you can use B&W Mask in Sheen (Strength).
I think I lost the screenshots myself because I cleaned up my past projects little bit too much... I am missing some folders those were in (such as "tests", "screenshots"...).