There really aren't any weird Escavalier sets (maybe defensive?) so I'll just talk about the Pokemon in general. Escavalier recently got a bit better due to its ability to wall and KO a bunch of hail Pokemon. Its Overcoat ability also helps it in slaying hail teams, as it is one of the many Pokemon that hates residual damage. Many teams prepare for this, though, in the for of Hidden Power Fire. I've seen a lot of Cryogonal and Lilligant recently with HP Fire, which is probably due to the fact that not many Pokemon can directly switch into Escavalier without taking a huge chunk of damage. Poliwrath is definitely the most relevant counter, as Steelix, one of Escav's other best counters, has a tough time doing well in this metagame with hail and hard hitters like Gallade and Nidoqueen.
I'm curious as to whether people have tried the defensive set in this meta, or if it's just best to stick with CB.