For the past almost five years, I have carried an 8 shot revolver on duty out of the fear of malfunctions, particularly those caused from limp wristing. This is one of the so called "shooter induced" malfunctions. I just can't swallow the fact that I may cause a gun to malfunction because I don't or can't provide the requisite pressure for the slide to operate. Maybe I am a little crazy or paranoid, or both. But, I have seen countless jams with semi-autos in training (including limp wristing), in police shoot-out videos, and I have read of actual accounts of officers losing their lives with a jammed up pistol in their hand.
The primary reason I rely on a revolver for personal protection is simply because I shoot them better overall, I'm much more familiar with their operation and I'm therefore more confident with them. However the above point is another reason. One of the tests I usually put a semi through is the loose forearm / weak wrist test. Until I found some private land to add the further element of lying on the ground at an awkward angle, I did the above test standing upright at a private range.
In short, I owned an XD that choked about 50% when held in such a manner, but was otherwise reliable. I've done the same test with a few Glocks, as well as a Springfield 1911. The Glocks experienced stovepipes at least half the time, though the 1911 was unaffected. That does effect my confidence with semi autos, but as always YMMV.
Jams are easy to clear in an auto...assuming your other hand is not busy keeping a box cutter off your throat.
Very true, but I will say not all auto jams are easy to clear. In addition to double feeds, which are a true PIA to deal with (I've had my 1911 and my dad's SKS do that), I had a Taurus 908 9mm sheer off a chunk of it's ejector which lodged itself in the frame rail so tight it may as well have been welded partially open.
If you plan on going on the offensive, hunting the active shooter, taking down the bank robbers after the pursuit, the auto, with its higher capacity and ease of firing multiple rounds, wins.
And of course, as I'm sure you well know, a rifle or shotgun would usually be preferable to either in said situation, though perhaps not always available.