OS stuff is too structured, it's very traditional english styling. cantarelli will drape better. it's hard to visualize it from the website shots - they're on a model and they're clearly an intentionally snug fit - but think something like these boglioli showroom shots:
look at the dude on the far right. killing it. swap out those pleated pants for some slim MMM ones and the MMM hidden belt, and blamo. look at that patch breast pocket, so fucking BARCHETTA bro.