I've been playing a lot with him lately.

From what I can tell he doesn't squeeze that lightly, and he cbets a very low %. But he seems to like 3betting a lot when deep, and I've seen him 3bet me deep from the blinds with SC's and such.

I would definitely just flat pre. I want to fold this flop, just because I feel like if he uses this flop sizing, you're almost always going to face more barrels. I'm pretty surprised he didn't fire anymore bullets.