My understanding of TN law is that carry permit holders are under no legal obligation to inform. But, the permit number and the driver's license number are the same and the CP will show up when the DL is run.
As a practical matter, what happens if I don't show my CP depends on the individual officer. According to my CP instructor, some officers become very upset and the encounter may become more unpleasant than otherwise. I keep my CP and DL together and will had them to the LEO when stopped.
This is the procedure the instructor recommended. He said definitely don't just say, "I've got a gun."
As a practical matter, what happens if I don't show my CP depends on the individual officer. According to my CP instructor, some officers become very upset and the encounter may become more unpleasant than otherwise. I keep my CP and DL together and will had them to the LEO when stopped.
This is the procedure the instructor recommended. He said definitely don't just say, "I've got a gun."