If you're going with an auto, and you might be carrying, you need to give serious thought to what type action you want. For example, 1911s are almost all single action (SA) only. What does this mean if you're carrying? You either start with a round in the chamber or not. If not, you have to jack the slide to get into business. Not the highest state of readiness. If you start with a round in the chamber, then either the hammer is down or it's cocked. If it's down, you either have to cock it or jack the slide (losing a round) to get into business. Not the highest state of readiness. If it's cocked, then you're carrying a cocked and locked (safety on) pistol. This may be something you're comfortable with, but not me. Law enforcement officers who carry single action pistolscocked and locked use a holster thathas a flap that goes between the hammer and firing pin, but you'll be hard-pressed to find a concealed carry holster with this design.

So, you might want to consider either a double action only (DAO) pistol, or SA/DA. With a SA/DA, you can carry with a round in the chamber and the hammer down, and the first shot will be DA. Each shot after that will be SA.