Um, carrying with chamber empty is akin to carrying an empty gun. The only time I would do that is if I had to pocket carry without a holster. How will the slide get racked if you're fighting off the BG with your other hand/arm? How about using your flashlight to scan the area using your weak side? Gotta fumble with racking before the light is at the ready. . .
I think he meant, he doesn't drop the mag and top if off after chambering, or at least that's how I read it.
I carry +1.