A problem with many of the sub compact pistols is that they are so small you really have nothing to hold on to when you try to rack it. Even at 6'2", 220 lbs and at least as strong as average, and I haveto struggle racking some of the little slides. I carried a Beretta Tom Cat .32 with a tilt barrel when I wore a suit to work, and even though I could rack the slide, the tilt barrel feature was nice. In addition to the initial function of loading the pistol, one should to be able to rapidly clear a jam under stress.
A compact revolver is usually a lot easier to depend on.