Must be because I'm pulling it forward for the buttoning pose - the jacket has virtually no waist suppression. I enjoy the full trousers with slim SC look though - Astaire comes to mind. It might make one look bottom-heavy overall, but does a great job at disguising wide hips. I hate the "carrot look" I get with slimmer pants.
Fair enough, I'd still taper them slightly below the knee though. It's a shame to hide your shoes under your trousers.