You should post up a comparison photo.
Fashion is not always about boring ass "rules" as dictated on SF, often times by closed minded folks who think they look like the prince of wales, but really look like your grandfather.
Not saying this guys look is "correct". but who really cares? Doubt that is what the guy was after.
Also fashion is just a collection of synonyms to describe a way of clothing gestation, either way you are even aloud to wear skirts, not that we would care. There are certain things people should never wear, suits with sneakers are one of them. You may like it and that would be fine, but don't describe fallacies about people being close minded when they don't share the same opinion about a subject.