That's exactly what I'm talking about for bare handed or gloved face jointing. My "short limit" is ~24". That allows my hand to be 12" from the infeed side, and 6" from the outfeed. Shorter than that, and I use pads.
Remember, the whole reason for skipping the pads is because certain wood is more difficult to move with the pads. Shorter and thinner boards are easier to begin with.
I have "danger zones" taped, painted, or marked, on all of my flesh eaters and the sleds and jigs I use with them. For example, my jointer has red tape on the top of the fence. If my hands will go into the red area, I rethink the cut.
When edge jointing, I never, ever, use blocks or sticks. After ~ 8" of stock has been cut, my right hand "pulls" the stock along the fence, and my left is on the table, acting like a featherboard. The entire cut is referenced to the outfeed table and fence for great accuracy, and my hands apply no pressure that would send them towards danger in case of unwanted adventure.