pellet hops have never given me any problems thru my pump. Leaf hops clog things like crazy.
If you whirlpool you should have no issues, most of the junk will collect in the center and not even make it to your pump. I usually start my whirlpool with 5 minutes left in the boil to sanitize everything, and by flameout im no longer getting any hop material thru the pump, its all collecting in the center.
I'd be cautious trying to pump something with a tremendous amount of hops...im sure enough sludge will clog any pump, but with normal amounts you should be fine.