A frequently posted, and at times hotly debated, topic; whether or not one carries their SD sidearm in full battery. I have some definite opinions on this and for myself, I believe they are good and valid reasons. Still, this is a wholly subjective topic and therefore multiple opinions and ideas abound.
All of the guns in my carry stable are of the DAO design (and I don't wish to get into any arguments about action designs vs gun types/manufacturers). Kahrs, Glocks, an M&P40, an XD40, a Kel-Tec P3AT, and a Ruger LCP live in my carry, all of which have reason to be there to satisfy whatever want and need I perceive at the time. Of these the only ones which have not yet seen carry service is the XD40 and a T9 Kahr (that one is just too pretty to carry).
I do have three single action pistols, two 1911's, but in all honestly, I just cannot bring myself to carry one of these in Condition One. It's a personal thing. I completely respect and understand those who do this but it's not my cup of tea. And I am not a fan of DA pistols for carry because of the difference between the first and second trigger pull when the hammer is at rest. I have found that for me, a DAO design is perfect in a semi-auto pistol. I want the least amount of hand and/or finger movements going on if and when I have to draw my gun in an extreme encounter. Which brings me to carrying with an empty chamber.
Carrying a SD gun with an empty chamber is something I find could be disastrous to my future health and well being. I've heard many arguments in favor of this and how some people claim they can rack their slide in a heartbeat to be ready and in full battery, but I don't buy that for myself and here's why. Suppose an assailant manages to get off a shot or a hit with a baseball bat or perhaps a strong hold, all on my support hand/arm? Now racking the slide has just been made far more difficult. Your attacker could grab hold of your gun before you have a chance to work the slide. And then there is the time element.
It takes time to rack the slide on a semi-auto pistol. The sight picture has just been delayed, if one was going to obtain a sight picture. There is the distinct possibility that in the extreme stress of a deadly encounter, one could mess up racking their slide and either have a FTF or some similar failure to go into battery. And lastly, it is just one more thing you have to consider before you are in a position to use your firearm. Still there is this.
Carrying with an empty chamber, in my opinion, is an intensely personal decision. If this is what one really wants to do, trains diligently doing this, is most comfortable with this mode of carry, then that is certainly what they should probably do. I would advise otherwise, but if this mode of carry serves them well, then go for it. It's just not for me.
BTW, my primary carry gun is one of my 3G Glock 23's. With no external safeties to set or release and a round in the pipe, all I have to think about is pull and pull (pull the gun, pull the trigger).