That being said i could carry a glock 17 or a glock 20 Mexican style with a NY trigger and not think twice about it going off. Thats how NYPD narcotics agents carried deep cover during stings and they never had to worry about a AD. It would not suit my lifestyle but it would get the job done i don't see the need most shootings happen within what is it 6 feet its been proven. I have 12+1 in my baby gun so i have plenty and if i need more i'll run back to my car. I hear about all these guys who carry extra magazines on them and have a EDC page. What are you planning for dooms day? As Jeff Cooper would say
"It has never been clear to me why increased magazine capacity in a defensive pistol is particularly choice. The bigger the magazine the bigger the gun, and the bigger the gun the harder it is to get hold of for people with small hands. And what, pray, does one need all those rounds for? How many lethal antagonists do you think you are going to be able to handle? Once when Bruce Nelson was asked by a suspect if the thirteen-round magazine in the P35 was not a big advantage, Bruce's answer was, "Well, yes, if you plan to miss a lot." The highest score I know of at this time achieved by one man against a group of armed adversaries was recorded in (of all places) the Ivory Coast! There, some years ago, a graduate student of mine laid out five goblins, with four dead and one totaled for the hospital. Of course there is the episode of Alvin York and his eight, but there is some dispute about that tale. (If you read it over very carefully you will see what I mean.) Be that as it may, I see no real need for a double column magazine. It is all the rage, of course, and like dual air bags, it is a popular current sales gimmick."