Stopped once for speeding. Lonely, dark highway out in the middle of nowhere by a State Trooper. I flicked a cigarette out the window as he pulled up behind me. He told me he'd let me get out and get it so he didn't have to write me a ticket for littering. As I came back to my truck, I handed him my DL and CHL. As I climbed back in my truck, he asked if I had my pistol with me. I said yes, he asked where it was, I told him, he said leave it there and everything would be fine. He asked for my reg and ins, I told him they were in the glove box and reached over and got them. He went back to the car, called (I assume) the stop in. Came back and handed me my paperwork and told me to slow down and have a good night.
Another time, went through a road block in the same area. A young county deputy was working it. I pulled up and handed him both. He didn't even ask about my weapon. He asked me if I knew I was supposed to show my CHL when stopped now. (The law was in the works requiring it, but had fallen thru and he didn't know it) I just responded to him, "No, I didn't know. I just figure it's best to let you know out of courtesy." He went on to comment on my tires and tell me about his truck. Then let me pass without even checking my reg or ins.
I've always found that being polite and respectful to LEO's goes a long way. Couple that with being upfront with my CHL, and they have been pleasant with me both times.