Well, I've never been in a real fight, but after spending a number of years as a Reserve Deputy, I've been "close" a number of times.
I tend to favor a "bladed" stance, most likely due to my background and training with firearms. Since I'm right handed that means left side forward. Body is turned clockwise from a full face forward position. Feet are comfortably about shoulder-width apart and around 150 degrees clockwise (visualize 12:00 to 6:00 as being 180 degrees). Lead foot is pointed to around the 1:00 position, back foot pointed to around 2:30. Weight is slightly back foot weighted, but I emphasize slightly. Torso is torqued a bit further clockwise than the feet. Right elbow is down (protecting gun) and hand is around waist height. Front hand is slightly elevated, and in motion if possible. Both hands open. Body tension should be relaxed but ready. Weight slightly onto balls of feet. Look open and non-threatening.
I am no longer LE, but still carry a handgun. For those of us who do so, control of the weapon is extremely important.
Kind of OT, but how many of you are aware of Cooper's Color Codes of Awareness and how they apply?