Oh, I sure hope not! EE's are so tricky. I really don't see any saddle feathers, and the comb isn't that big. Mine kept me guessing pretty much until they laid eggs! Did the folks at the swap say it is a Barred Rock or Cukoo Marans cross? That would make a difference, and since it is a mix it's going to be harder to judge just by the color of the barring.
Barring doesn't work the same with the crosses. My males are very dark, very light and everything in between, so you cannot go by that. Right now, it look pullet-y in some ways and the look in the eye looks male, but the crosses are not always so easy. I don't see any shiny saddle feathers yet.