willw, a routine traffic stop with a carry can bereally hairy at first. But there is a procedure and most LEOs are very good at handling the situation. You will not be the first person they have stopped that is carry a CCW and you will not be their last. What you do when carrying and get pulled over. Here is that darn phrase again - EDUCATION AND TRAINING. KNOW YOUR STATE LAWS! Some states require that you inform the LEO you are carrying. Some states you do not need to tell him/her.
Bravo. I agree with this. I have taken classes and, if I may add another thing, if you do have firearms, it is always beneficial to join at least one gun club (I belong to two). Not only is it fun, but you are exposed to some really knowledgeable folks who are always willing to help and answer questions on technique and procedures (not just lectures), much like a motorcycle community. And, it offers you a chance to practice a lot, which makes you really comfortable with your firearm.
First and foremost, do EXACTLY and calmly as the officer tells you, to the very last letter! Do not argue. Yes sir. No sir. Thank you sir. And keep your hands on the steering wheel where he can see them...
Yep, I agree. The thing is to make the officer as comfortable around you as possible. Don't take the stop personally, since he or she is really just doing their job as they see it.
The nature of my response earlier was if it would make a small difference in the officer's subconscious decision on what to do with you. In other words, if that officer is mentally teetering as to whether to ticket you or warn you and have a nice day, would that holster work against you? Never mind if the law is on your side or not.
When asked for your DL and insurance you also hand him your CPL. He will either ask you if you are carrying or he'll make conversation about it. That is up to the personality and good day/bad day the LEO is having. Whatever he does, remember, calm, yes sir, no sir, thank you sir, hands on the wheel. He might ask you to step out of the car whle he secures it. And that is ok, just let him, do not make a fuss. He will hand it to you at the end of the stop. He is only doing it for his protection in order to stay ahead of the situation. Remember, he does not know you. So he must treat you as the real bad guy who will kill him until he is sure otherwise. So, go along respectfully with everything the LEO asks you to do.
I live in Vermont, where no permit is required. Even for conceiled and loaded carry (with a few exceptions, as I mentioned in my previous post).
But, yeah, even if conceiled, I do agree that you offer the courtesy to let him/her know. It helps calm the situation.
...ps. Some LEOs don't know the exact laws when it comes to CCW. Some LEOs know the rules correctly. That is why I suggested that you print them out out (the ones regarding personal and car carry) and keep them with you in the car so that you can present them if there is a question. I suggest that you do not keep the papers and the firearm in the same location

Worse, some LEOs think they know the laws but get them wrong. They are convinced they are correct, when not. Don't argue. Take you lumps and take it up with the judge later.