Wow! I would imagine that pulling the trigger might be a handful, not to mention expensive. But very cool, I'd love to try it just the same. Shoot at a pistol match and give the guy scoring your target a headache.
To carry one of these you might want to invest in a gun-bearer. I don't think that those of us that are on the small side could hide very well. Nearly as big and heavy as Colt Dragoon.