Hard to cock and very hard trigger pull! I just sold a Davis for a friend who didn't know what he was getting into when he bought it, the trigger was a test of strength! Many years ago I had one in .38 special which was surprisingly accurate if carefully aimed. I could consistently hit beer cans at 20 yards if I knew which barrel was going to fire, had to know that because the upper barrel shot a foot higher then the lower barrel. I went so far as to work up special loads for it. With a 158 grain SWC in the lower barrel and a 110 JHP in the upper both would shoot to the sights. But that was aimed fire, for "point and shoot", as the gun would actually be used, it was hopeless! The grip provides no consistent position in the hand. If you just grab it up the muzzle may be pointing at the ceiling one time and at the floor the next. I'd never consider one for real defense. The Kel-Tec .380 is just as thin and flat, is lighter, and though the ergonomics of the Kel-Tec are not the best they are way better than a derringer, and it carries three times the ammo.