To the OP: Unless there is a legit issue with the phone, then you should go in and have it replaced. They will NOT replace the phone for just a scratch. Apple isn't gonna dish out a brand new phone over a scratch, nor would any company go even close to waste money because someone had a small scratch on their phone.
I do understand that it sucks (cause I'd be all 'blah' about it too), but if you want to get a replacement, you're gonna have to go the AppleCare+ route and drop your phone and have the screen break. This way you can pay the $49 to have it replaced.
Also, considering that they're still shipping out tons of iPhones (obviously because of recent launch & high demand), who knows if they'll have one readily available for you. They may have to add you to the order queue, maybe not.
I'd rather you stick it out because it's hardly a big deal (not even close), but if you REALLY feel like you have to (reminder: you don't NEED to) get it replaced, then do so, but you have to go to Apple with a legit reason as to what's wrong with the phone.
--Oh, and just my honest thoughts on this: Don't bother. It ruins it for the rest of us and it makes people wonder how spoiled and ridiculous others can be. :x
ps to everyone: Sure, I'm against it yet I'm giving him advice, but let's face it, the guy's gonna try to get a replacement anyway. He DID make a thread after all.