I'm not George but can vouch for him, LOL!
The pin version is the same pin-section as a regular slide stop that's held in on the other side of the frame by a tension wire that fits into the detent groove on the pin's end. So there's still a pin holding the slide from sliding off the frame. Like a regular slide stop, it is removed by aligning the reference notches on the slide/frame and pushing on the protruding part from right side of pistol. So it is the same as a regular slide stop, but without the outer lever and your slide will not lock back on empty mag or manually.
Not a big deal for those who never plan to shoot until slide lock anyway and just reload with large-cap mags where appropriate in a stage, if even needed.