We are planning to remove VTP from a production network that has RPVST running. This is at the core (a pair of Cisco 3750s) and we are trying to weigh the impact it has on the production network.
In theory, this should not effect anything, the VLANs are already in the switches' VLAN database and they would continue humming along.
This following is quoted from the Cisco 3560 configuration guide.
Note: You can use the vtp mode transparent global configuration command to disable VTP on the switch and then to change its VLAN information without affecting the other switches in the VTP domain.
I may have answered own question above but the real question really is:
Has anyone done this configuration before to test the theory above?