I do. What was the ASP Key Defender, now sold by Mace. Handy little device and easy to carry.
Gun-fu isn't always the answer and I like to have options. If I knew for a fact it was legal, I'd carry one of my Mondnock expandable batons as well just to have another option. And if I had the money, I'd carry a Taser in my car, and anytime I was carrying a briefcase/backpack/bag of some sort.