A while back I read an article that laid out some research done with officers who had been involved in shootings. The vast majority of them, regardless of what style they were trained in or how much training they had, resorted to a crouch with hips and shoulders facing the threat and firing one handed without using the sights. The article had a disturbing statistic that in the years since two handed, front sight focused shooting has been in vogue with law enforcement the police, nationally, have an 85% miss rate in actual shootings.
The author went on to say that this falls back to instinct. When threatened we tend to face what is threatening us and crouch and if we have something in our hand be it a stick, rock, or gun we hold it up between us and the threat. We also focus our attention and vision completely on the threat. His contention was that shooters should first be taught to utilize these instinctual responses and learn one handed point shooting (not using the sights) and then move into two handed front sight focused shooting as a more advanced technique suitable for longer ranges.
Lately I've been practicing with this and am getting to the point where I can keep them all within the torso of a silhouette target while shooting one handed from the hip at about 20 ft. I also like the one handed shooting because it frees up my other hand to help deal with an attacker who is in contact range.
Oh, and it's a heck of a lot of fun
Bronson