For years, when training and competing, I used the slide stop on my 1911s to return the slide to battery when conducting a speed reload. I had found that I could more quickly obtain my shooting grip in this way.
The ideal solution to a bad situation is to be aware and get out of the area. The next best is to be aware and face the situation on both feet, with your gun in your hand. But even the best laid plans can fall to the wayside during a life and death struggle.
While I’ve always been a proponent of dry firing for the early stages of skill development, the recent lack of ammunition in stores has forced me spend a lot more time pulling a trigger on an empty handgun.