Your poll needs another option, like "both." I have a revolver and several semi-auto pistols. I don't exclusively carry either. I split it about 50/50. For nostalgia reasons, I like to carry my Ruger Police Service Six, .357 magnum. It was the first major caliber handgun I owned. It was also what I started packing when I first started working as a security officer. Even now, I sometimes carry it on duty, as well as when I'm off.
When it comes to open carry it's always my Ruger New Vaquero .357 in it's High Plains Drifter Rig. People don't feel threatened when they see a western gun & rig, it's always wow, that's really nice, cool, looking good,etc., but never anything negative.