You simply run the gun down your pants thru the waist,belt,pocket area on the side. The rear sight will drag on the pants and get pulled back loading the pistol
Good luck to you with the "run the gun down your pants leg" method when you're under physical attack. Same for Israeli style.
Yes, those methods may work when those violently assaulting you are at a distance, but how much have you practiced with people simulating punching, stabbing, or hitting you with blunt objects up close? Or while they're dragging you out of your car?
Not saying that practicing one handed skills isn't potentially life saving in some situations.
I'm not an expert nor an operator, but it seems that skills that create enough space to draw your weapon and shoot might serve one better in a high % of real incidents.
Like the very typical incident in the video, for example.