You should look around the forum some more. There have been many instances where voluntarily informing has not worked out well for people.I just hand them my drivers license and gun permit. That way there are no surprises for either of us.
If an officer has a legitimate need to disarm you, its best you offer to let them remove the gun from you. If you did it yourself a second officer or video camera could take it the wrong way.
For my part, if asked I will not lie. If not asked, I am not saying a word.