As one with a verizon manager as family, I can tell you that the upgrade is tied to the ESN of that specific device. Swapping before activating can very well set off a red flag that may cause issues.
My recommendation is to take the device (sealed in the original box) to your local store, tell them what you want, see if they'll work with you to swap it. Odds are, they will open the box, activate the SIM that's coming with the device, then open the black one and use that SIM in the black phone. There is a chance that they won't allow the swap, but I find it unlikely.