Nah, they'll let you out if you move to somewhere where their coverage map shows no coverage if you can prove it.
As a curtisy but they are not legally required to do it and I fully except them to clamp down hard on all iPhone customers. They know clamping down hard on them is not going to really cost them any one since they are going to loss them any how.
I think the distrust of iPhone customers is going to go sky high. It will be a lot of playing it by ear.