Fifty years ago, in the military, I read of a sergeant who was FAST with an issue handgun. He used a 1911, no bullet in the chamber, in an enclosed military holster.
He would start his draw with his hand hitting the flap and opening it on the upswing then grasp the pistol and pull it out. His Left hand would be moving across to grasp the slide, then he would fire. Very quick.
No matter how how he did it, he still needed two hands to get his firearm in action.
On a trip to Mexico, I noticed the Mexican border guards all had 1911 pistols (Probably .38 Super), in open holsters, cocked and locked. They looked like THEY meant business. That was fifty years ago.
1911 was designed to be cocked and locked
Great if you have the use of both hands.