As SimperFi pointed out, with the LP# the LEO, IF he has a dashboard computer, can connect it to the operator license, which will flag the name in red and contain a comment, also in red, "weapons permit". That I did not know, but assumed to be the case.
That isn't what he said. Specifically, he said:
The link is actually to the Nebraska Operator's License through NE Department of Motor Vehicles electronic records.
If you know an LEO with a dashboard computer, you can ask him to run your NE Operator's License through the system by OL Number.
Note that at no time did he say "license plate." He said operator's license. So no, when they run your license plate, they will not have information about your CHP status, as the license plate isn't linked to a driver's license number in that way.
I also note that my source for this information (which is probably every CCW instructor's source for this information) is the state patrol.
Ergo, when an LEO approaches your car and asks to see your DL I am going to assume that he already knows that I have a CHP.
So---you are given information that says that this information isn't available to the LEO until they run your driver's license, but you are going to assume that they have it when they come up to get your driver's license so that they can run it?
What he does NOT know is if I am armed or not. By law I am supposed to inform him/her immediately if I am. If I do not then the LEO has two choices: 1) assume that I am not armed, or 2) assume that I am armed but I have violated the law by not immediately informing him/her.
Both are assumptions. An aggressive, anti-2A LEO could, especially in a jurisdiction with an aggressive district attorney, anticipating that I am armed but negligent, ask if I am armed.
True. However, the point at which they would know this (and presumably, given your hypothetical, do it) would be after they've run your driver's license.
If I am, I'm going to jail and lots of other hurts will fall down on me, but that would be my own fault. If I am not, would he/she then charge me anyway because I didn't announce such at the beginning of the contact? That's an attorney bill and legal test I do not want to undertake.
And again, the answer is: No. If you are not carrying you have NO obligation to say anything. If he attempts to claim such, he is wrong, and it will fail in court, and it will not be any sort of "test." The law is quite clear, and there is no grey area.