You wouldn't beleive how many hackers there are on wifi. Hidden power ice seems to be everywhere. Finally garchomp has died down though. Meaning HP grass will become more popular as it should be. But I fear that AGmence's raise in popularity shall not make people think twice about using HP ice. ALso, if you really need something to have a HP, it's not that hard to get. It just takes time and patience, plus there are a lot of people whom will clone to give you those pokes.
I don't know about you, but I fear Land Shark and Sala a LOT more than I do Pert. I think sticking with HP Ice is the way to go unless you have a lot of IB/IP users on the rest of your team.