As a teen-ager in the early '50's, living at the folks place in south-central New Mexico, I came home one day having traded for an H&R revolver. When my grandpa saw it he began telling me how flawed the (tb) design was and that it could cause problems. When asked, he hesitated to explain but, being a good old fashioned teenager, I kept asking. Finally he told something from his personal memory. A law-man in Silver City, who carried a S&W, had warned a bad-guy out of town by the next day. Next day, noonish(my phrase), there was the bad-guy. The law-man started to throw down on the bad guy but his weapon came open as it cleared leather and emptied the cylinder into the street. The lawman lost his life. And that is why Grandpa didn't like top-breaks.
For years I wondered about this; the tb's that I knew of weren't prone to this sort of thing. The answer was the Schofield design,which facilitated one handed operation for a cavalry-man, but, in at least one case, was not appropriate for a man in a hurry.
Just some thoughts from the Old West. jimmybaby