I sent TC an encrypted question regarding an order. Upon sending the message I checked his PGP key on blackbank and it's not the same as it was before on Evo. He hasn't responded but he's been online so I'm assuming he can't decrypt it. I never saw him post that he was changing his PGP key so I'm a bit skeptical now. I haven't ordered from him since Evo and was looking for any feedback I can get.
EDIT: Have spoke to TC and he has verified that it's him. TC is on Blackblank, Nucleus, and Agora!
If it's not the same key, its not the same vendor. Period.
Unless they can verify the new key with a message signed with their old one treat them as an imposter/LE.