I watched the Outdoor Channel a little while ago where they had a show on Israeli weapons. They do not carry +1. They learn to rack the slide as they draw. The right hand draws, arm extends, and as the arm is extending and the gun being brought to site the target, the left hand grips the slide as the right hand extends to rack the slide. They did a time comparison both ways. +1 vs. empty chamber. The empty chamber won because there was no need to flip the safety lever on the +1.
The Israeli's , both military and civilians practice this method because it's safer while walking around in crowds.