^ I will build upon this...
A revolver is no better with reliability than a well built semi auto. That is one thing I have learned so far with my time at this gunsmithing school and from talking to the instructors (who worked at the factories or had their own shop).
I will use Hk for my example...
I see no reason to carry a revolver (using the hammer down on an empty chamber notion) as I can rack the slide on my Hk, and then use the decocker to let the hammer down safely. At that point, my Hk is exactly like a revolver using the double action trigger pull to fire off the first round, and (unlike a revolver) I have twelve more rounds of 45 acp to follow if needed (or 8 in my wife's gun). Some semi autos are better than others. As others have said and I say, if you're gona carry (using the gun for self protection), you should carry the best, and to me, nothing I have owned has beaten the USP.
