Ok. Just received my rep straps with Deployants. Major difference on one of them is the engraving of the logo. Rep is very shallow and does not exactly have the same details as Gen. However, this same deployant has better engraving inside of the clasp and matches the Gen very closely if not the same. On the other one, the engraving is spectacular on the logo. However the engraving inside is heavy handed and too thick where it says Breitling. The engraving where is says Model Depose looks as if it was silkscreened and not stamped/engraved.
As Mike says, the curve is slightly different rep to gen. I think quality control is one of the big thing that seperates Gen from Rep and I have two rep buckles that are vastly different in quality. If I switched parts between the two buckles, I would have a very near perfect one indistinguishable from Gen and a horrible copy that would stand out a mile away!
Hope this helps!