OC is a go with a CCW? Then OC is not really a go, is it? Something is better than nothing I guess. Wentzville is a OC w/CCW town.
Yes, that is why the list Doc maintains has three columns, illegal, legal with ccw, and legal. The ability to change that is why the list says to check again yourself as any place can change it on any day.
No more evidence for a state wide preemption should be required, but that is logic and no one says the gov has that element to it at all!!