Are you referring the the Chargemaster 1500 (scale/dispenser combo)? I have one, it is great.
I use mine for doing load development, when I want to quickly make a bunch of small batches of varying powder charges.
I enter the charge weight, set it on automatic, and start loading. I find I'm not waiting much on the dispenser. When on automatic, it starts dispensing the next charge when you put the empty pan back on the scale. While the machine is working, I am seating the bullet and crimping. When I'm ready for the next powder charge, the dispenser is usually about done.
It occasionally throws a charge that is a little off. On those, just dump it back in the hopper and do it over.