I've been using scout Persian with a lot of success on my latest Showdown account, annelle. It can preserve momentum and completely shut down common Misdreavus, Alomomola, Lickilicky and Audino, as well as some common rock setters. It needs good team synergy to function well though, and hazards ruin it (I don't have a rapid spinner though--I try to use offensive pressure to prevent the opponent from setting up too much... sometimes it works, sometimes it doesn't).
I have both Piloswine and Persian and I usually don't lead with either of 'em. That lends it some more long term survivability; with a Silk Scarf it actually makes a decent lategame cleaner.