I just want to make a quick note, many ADs may know that you are wearing a rep, but many, many do not. Your average shop, particularly one that doesn't specialize in watches, has a sales staff that likely has one watch expert with the rest capable of selling to your average joe but unable to tell a Rep from a Gen. This has played out for me a few years ago when I was shopping for an engagement ring, I'd go into a store wearing my rep watch and get comments on the watch from the sales person I was working with, I was always appreciative but never revealed it was a rep. I think that if you're going to an AD and trying to pass it off as a gen its one thing, just to casually wear one while shopping is another thing entirely.
Cheers