Okay, after a few shaves with this puppy, it broke in NICE and works REALLY GOOD with Tallow based and triple milled hard soaps. I think that the thickness, viscosity or soap bloom ( nectar, gunk or whatever) has a better chance of sticking to the fibers, but whatever the reason this brush IMO is a real champ and creates the best face lather for a sinfully rich shave.
HIGHLY RECOMMENDED !!!