My rods come out of the tube and down onto the ball - no twirling of the rod in the air to swap ends. I used to do that, but do not any more.
Hatchet-Jack turns his rod to ram the ball down his smoothbore while I don't when loading my rifle. Both using patched round balls, loading is fairly even, time wise. Neither one of us is rushing- just normal loading.
The tapered or not, is a good observation. The rod I am using is not tapered, while his is. The grossly tapered rod for my 48" .50 barrel is tapered, from 5/16" to 7/16". I do not turn it around when loading, but I do choke up on it for short strokes so I don't break it. 48" flawless hickory rods are not easily acquired here in the North.