Guys and gals wear a lot of t-shirts in the warm weather, which is hard on concealment. Whereas in the winter we bundle up in sweatshirts and coats, and layered clothing and it is easy to conceal. As far as open carry in Delaware, not many people do it. I live down state and haven't seen but 4-5 people open carry in the 50+ years I've lived here. I do open carry at home sometimes, depending on the chores I'm doing, but I never open carry off property. I'm not one for trying to act big and bad like some I've seen open carrying. I once had a guy come to a yard sale open carrying, walking around with a revolver, and scowl on his face, and I had no problem with him as I was standing close behind him carrying a 9MM semi with 18 Hollow points, and he had no clue.