Gats, if you know it's coming, you can defend against it. Trouble is, most will not expect it. The adversary need only reach with the left hand, grab the slide and push outward while pinching the right side slide release button with his middle finger and slipping the left side slide release lever with his thumb. He yanks the slide forward as he steps to his right. I showed this to my 16 yr old without his prior knowlege as to what I intended. I just told him to resist. He was stunned to be standing there with a frame and magazine while I held the slide and brought it down on his head to simulate an incapacitating blow. Just something to consider.
I still love 'em, but I carry an HK