That Kimber grip safety sticks quite a way out of the frame. It would seem to protrude just as much as any of the "speed bumps" of other maker's safeties.
Some shooters get such a high grip on the pistol that the web of their hand is pushing up against the tang of the safety, thus pivoting it OUT of the frame. This usually involves shooters with thick, "meaty" hands. Since you describe your hands a "thin", I wouldn't think that this would cause you a problem, but check for it. If this is what's happening, then no amount of "speed bump" protrusion is going to help.
The internal "leg" of the safety (which blocks the trigger) can be carefully fitted so as to allow the trigger bow to move past it with only the slightest pressure on the grip safety. Of course the grip safety may be pinned shut or the internal "leg" ground off, thus disabling it, however you'll quickly get your fill of barracks lawyers telling you that, by so doing, you've consigned yourself to doom and ruin.
Rosco