It is beneficial, even if you're doing everything legal and highly advisable so you don't get roughed up or spread on a car hood with a gun to your head by a nervous or surprised officer especially in traffic stops. It goes like this: with both hands on the steering wheel or held out if front of you, say "Hello officer, I want you to know that I have a concealed carry permit and I am carrying at this time. What do you want me to do?" or "Officer, I want to advise you that I am carrying open a handgun. It is on my belt at my (side, back, whatever). The police in this state are getting shot at a lot these days. They need all of the help we can give them to reduce the stress.