The lifetime warranty is a good thing to have.
I know that there are different tolerances in any manufacturing process, but this one seems a little bit out of what I feel would be acceptable as a customer (maybe I am just being picky). In any event, if you are thinking you will hang on the bike for a while, it probably makes sense to wait to get a fame that is versatile as possible.
One more thought about used, and then I'll shut up about it. Swifts are desirable enough that if you get a used one, you'll likely be able to sell it for the about what you paid for it, provided you keep it in similar condition. It might not be a bad idea to grab a used one, make sure you like it. Then, if you want a new one (from the new batch of frames), sell the used one. Think of it as free bike rental! I've done this a few times when I've had visitors coming or if I needed an extra bike for some reason or another. The selling can be hassle, but I kind of enjoy the process.
With that out of my system, I will not bring up the subject again.