It won't matter. It seems apple warranty is tied to the device, I was able to swap a phone under warranty that I bought on ebay. Got the original owner information on the repair receipt, which could be a concern for people that like to hide name address and email.
Also according to the applecare agreement it can be transfered to a new name but only if the previous owner submits it. What I gather from that is the paperwork in name is transfered, but they honor the repair of the device to anyone because again the warranty/applecare follows the device.