A bit, yes. If I'm not mistaken, it's one that Foose did. I also notice that the bumper is tucked in closer to the body, much easier to do with the bumper flipped. Looks like the reshaped the ends to make them flow with the fender openings, the stock bumpers, while having a reversed angle, have a more curved end.
I guess to my eye, the bumper mounted that way looks odd.