I am aware of this trick and did it the last time I upgraded. With that said though im not gonna take my chances again. I dodged a bullet once im not gonna risk it again lol. When I did it last time I simply called Verizon, upgraded, they said I'd loose my unlimited, they made me do a vocal agreement to accept the terms and that was all. About a week later my phone came in and the Sim was in the package, I tossed it to the side and put my old Sim in and have enjoyed unlimited ever since. I've contacted Verizon plenty of times and never had an issue.
But to answer your question, I'm pretty sure anywhere you can order the phone to be shipped to your house means the Sim will not be activated yet. Some may preinstall the Sim, but it won't activate until the phone is turned on. So if you do order it and it arrives at your door, DO NOT TURN IT ON!!! Take the back off, pull the Sim out and place your old one. Then turn it on and you should be OK. They will lock your account but, give it some time and your account should unfreeze on its own. All it means is you won't be able to make changes to your bill.
If your willing to take the risk then best of luck
Just remember things change and that trick has been around for a few years now so do it with limited expectations.
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