i don't think DC dudes bite off anyone, things can be similar without having evolved from one another.what i meant by saying it's unique is that the visible majority of DC cats are distinguishable from guys NY, Atlanta, Cali, etc.
DC style is funny because it's almost the same as the southern whiteboys i went to undergrad with. Straight leg jeans, new balance 99_, northface fleeces. It's definitely unique. I like the fact DC has their own identity.