The factory OEM grip safety does the same exact thing with regards to positive release. It's thicker at the rear than a standard grip safety. The only difference between their original and the "Tactical Bump" is that the original has material above the bump, for lack of a better description. Either will accomplish the same thing. It just comes down to looks and tactile feedback. I suppose and argument can be made that you can feel the grooves on the bottom pad, which is the theory behind the "Memory Groove" pad on the Ed Brown. Those are some shallow serrations, and you would have to have some pretty lilly soft hands to feel those. You can though feel the top of the pad, so there is an unconscious tactile feedback letting you know if you have a consistent grip. It's a small personal preference thing. I like the looks and the feel of that "Tactical Bump" safety more.