And then of course was the North Hollywood Bank Robbery where you can see the camera pan and most every cop not with a rifle is using a 2 handed approach. Yes, it was longer distance. Yes, they were against full auto weapons. Some tried leaning out from under tires, but from what they were doing, it looked like they were spending time shooting walls.
In truth, police examples may be some of the worst possible ones for comparison to non-police since what I am planning to do with my obligations and situations really differ hugely from that of what the police are supposed to be doing. I have seen a fair amount of police shootings on COPS. Yes, I know the sampling sucks, but it is what I have seen most often. One-handed shooting is often on the move, sometimes at full sprint, usually in a foot chase situation. Other times, one-handed shooting is the result of needing to have the second hand free to radio, handcuff, or while otherwise fighting. They must go one-handed because the must be in way too close proximity and end up with a close contact kind of combat.
If I chase a bad guy, it is to the doorway where they have then fled from my house. Unlike the police, I don't have the obligation and I sure as heck don't have the need to follow somebody from the security of my home and out into the street for a fight. Inside the home, one the property, or anywhere else, there are no prisoners. I have no reason to come into physical contact with the bad guy so as to do something like cuff him. He either flees or is incapacitated. Either way, no touch is the rule.