My father, who used to contribute to HCI (the Brady Bunch). Now he's a supporter of the 2cd although he doesn't carry or anything. He also used to be a dyed-in-the-wool FDR Democrat. Now stauch Republican. He says he didn't leave the Democrats, they left him.
But I can't say I know of anyone else per se. I'm still working on the other memebers of the family. I remember when I first brought my Keltec PLR-16 home for Christmas (just to show everyone and poke fun at them), my sister picked it up, and you could obviously tell she was uncomfortable holding it, and said "This is excessive!" HA! I tell her that now when I go to the range and someone has a really big gun or some black evil looking thing I tell him, "Hey man, that's really excessive. Can I take a shot?"