Yeap, i carry a large frame revolver in the summer time. To be exact, I carry an Old model Ruger Vaquero with a 4.5" barrel in .45 Colt. It gets slung in a drop loop, and is actually very comfortable to wear for long durations, bulk isn't an issue with a comfortable rig. It looks pretty and packs a heck of a wallop is ever needed, however single action revolvers are slow to reload so i carry a small backup. Capacity, well, it is a revolver. I however feel confident with my ability to alleviate a "civilian" encounter with my two pistols. If the zombies come, I would break out my Hi-Cap 9mm CZ-75, AK-47 Battle Rifle with a ton of mags for both, and my very sharp Katana that never runs outa ammo.
Zombies Fear me!