It's at least twice as fast as I could do it without it. About 60% fall in place with a couple shakes. The rest easily fall in with a little help. It's far better than placing each round in the hole.
Heal of the gun has to be above the top edge of the belt and the holster has to be no more than 3" from the shooters body. I went back to my RHT dropped and offset. And of course your cover garment has to cover it.
The only knock I get is the powder funnel pulling out of the case. Cycle it 8 times with no cases to make sure the noise isn't there first. Then put a primed case under the powder die and see what happens.
I can tell you that if I shoot duty ammo out of my PCCs, I will often get some hot debris on my face....keep in mind, I'm a lefty and my face is on the same side as the ejection port. Never happens with softer shooting ammo.
It's pretty light, but you certainly know you have something on your face. I don't get a crisp view, probably because of my eyesight. I've not messed with mine in many weeks. It's the kid's game now.