[Darkjedi]

From what I understand, if you install the Shipped ROM image, that includes the stock radio as well, so you don't have to worry about reverting the radio image. That said, most VZW techs (as most other carrier techs are, ATT included) are inept and probably know less than you about the phones and probably would've even be able to tell stock from custom ROM. Of course that doesn't mean you may get unlucky and get the one knowledgeable tech on his bad day that will just stick it to you.