Yes, but "long enough" is not necessarily just a month or two. I've been having poor success in my tank for 2.5 years now. I've been reefing for 11 years now and this tank with dry rock is the worst I've ever tried to keep. I'm tired of failing, especially when so many people just go to the LFS, get some live rock, and are growing acros in 2 - 3 months.
@Curryb15 I am planning on doing something similar for similar reasons. I'm ordering rock from KP Aquatics, and my plan is to remove all my old rock and replace it with the KP Aquatics rock. Whether you get a cycle or not depends on how much life there is on the rock, and how much dies off during shipping. I'm going to cure my rock in a 5 gallon bucket with a powerhead and heater for at least 2 weeks with 100% water changes every few days.
Personally, I would not put the rock directly into an aquarium with live animals. Even if you air freight the rock and and it's shipped in water, there's still going to be some die off. It might not be a significant amount, but I personally don't want to take any chances when it comes to the animals in my tank.