He isn't listed under the family section on their website but that really doesn't mean much. He might have just signed or something. I think it would be sick if he was, plus I feel like his style really fits well with Jiberish and the rest of the team they have.
Wouldn't surprise me if he got signed on, but I don't think so. I may not be a fan of it all, but Jiberish makes some quality shit and everyone loves quality shit.
clayton vila was wearing an a la mode in one of the post cards for poorboyz, I see warnick wearing jiberish, maybe they sponsored the whole stept crew?