I have never had any of my springfield models, and I've owned compacts, service models, tacticals, and XDMs in assorted calibers. I've shot a variety of ammunition in all of them. And I've never had a single stovepipe, failure to extract/ eject, fire, or feed. What unconventional shooting position has ever caused a malf? I'd personally like to know so I can shoot from that position myself.
Here are a couple links to some torture tests in case you wanted to read up on them.
http://theprepared.com/content/view/90//administrator/
http://www.weaponscache.com/forum/pi...ture-test.html
I would also have to agree with that.