If a cop engaged me in friendly conversation about the pistol I was OCing, I would gladly talk with him--as I would a guy wearing a Flightsuit or blue jeans. If I was CCing and it showed because my shirt rode up, and he engaged me in friendly conversation about the pistol I was carrying, I would gladly talk to him. OC is legal in CO, so there would be no problem going from CC to OC. However, if CCing, you need a permit. Had he at the end--still in a friendly manner, mentioned I do need a permit to CC and asked if I had one, I would simply say yes. I would expect the conversation to end at that point. However, he could legally ask to see it in this situation and I would show it to him. Then I would go about my business. I see little difference between what the OP did and what I would do. Therefore: I would call either situation a "non" encounter.