When I went to BB to return my phone because of some issues they just pulled a phone from their stock and promptly swapped it out. Even the associate said they would usually send it out for reapirs and give me a loaner, but since they had a lot in stock they just gave me a new one (I also have the black tie program).
Strange BB still has it backordered. The associate said that when the phone was first released there was a pretty good run on the it and they had low stock levels. But sales have tapered off a bit. She also said some of it had to do with the released of the SIII which was selling fairly briskly.
But I guess that situation varies from store to store.