I have two lovely sword canes, but the blades are considerably longer than 3" and therefore are considered concealed weapons. With no license to carry, I am stuck with a small Swiss Army knife -- plastic for everyday and sterling sliver for evening. They are very useful. Secretly, I long for a sword umbrella a la John Steed. As a former sabre fencer, I would feel very well equipped. Besides, it would go with my bowler.