Until they know for a fact that what YOU are doing is perfectly legal(proving it with your permit) why should they think anything else? There may be those that decide to try and carry that are not doing so legally. Maybe my view is different than yours, but then again I don't agree with constitutional carry personally. I am more than happy to provide identification to any officer that asks if I make the decision to OC. I look at it as part of the deal right now. I decide to OC, I decide I am willing to be confronted multiple times throughout that day to verify I am doing so legally.
So, you believe they should assume you are a criminal if you are doing something that is perfectly legal??
Honestly, I have no intention to carry openly in town, however, I WILL carry openly if/when I make it to Midwest City! I'm NOT looking for trouble or to be a "test case", but I will NOT allow some bureaucrat to harass me if I can prevent it. I just ain't wired that way!