Guns, Dogs and Blades QnA

Have we discussed preferred blades for every day carry or even a night out on the town when a firearm isn't available? I was travelling to a large city recently and checking a firearm on the plane is a PITA for a short trip so I left them at home. Wouldn't have mattered much because it seemed everywhere we went were signs prohibiting concealed firearms. Anyway, while walking around the city I felt very vulnerable with all the vagrants and homeless people lounging around. Had one turn and follow us for a short time until we went into a restaurant. Would have felt a lot better with a decent blade in my pocket. I'd probably prefer a decent sized folder with a clip that is quick to open and preferably has some bolster type features to keep from slipping on the handle. Recommendations or examples of what works for you all?