Some folks do go to work clean and come home dirty, muddy, etc, having faced inclement conditions as part of the job.
A friend of mine on a SWAT team during training crawled through dirt and mud, and since it was training couldn't have a magazine in their Glocks. Well after crawling for several hours, dirt was impacted into the mag well of the Glock. He knocked the dirt out, because the next part of training required shooting- no jams. He also has extensive firearms experience, and has seen no 1911 go through crap like that and still shoot.
Like I said before, if all you have to worry about is steel and concrete, go with a 1911, they are nice looking guns, they are accurate, but if it comes down to combat, go with a good, reliable gun, that holds more ammo than a Taurus revolver. No combat team in the world today issues 1911s. Berettas, Glocks, but not 1911s. I'm going to put my Ruger and my Beretta to the test I am proposing and will report the results. And no I haven't put 1000 extra dollars into my guns to make them reliable.
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"Vote with a Bullet."