From the article- (do not, I repeat, do not ever consider carrying a pistol in your pocket by just dropping it in there, by the way),
What if the pistol has a manual safety? I used to live in the city and when I took the garbage out to the cans in the alley, I'd drop my little .38 snubby in my pocket just in case the zombies were out there. Wouldn't a manual safety gun be ok in that otherwise empty pocket? Not all day, just for a minute or two.