If you are carrying the gun, you are probably correct. but if you are visiting TN, I would suggest leaving your folding katanas at home.
Most officers are not going to check a knife's length if they are concerned with establishing your handgun carry status. but
the airport security guys and other places where the guns are already a no-no are definitely going to care.
Furthermore, I don't advocate relying on "what usually happens."... while I have done it and gotten away with it, I have also seen it go the other way. It would be a damn shame to have a CCW, be carrying a gun legally and yet still get charged with a felony weapons charge because you felt like you needed an extra inch or 2 of blade. Does not seem even close to being worth the risk to me.