I only know one person that uses a Lee progressive press. He has a single stage set up for sizing/depriming, and uses a hand held primer seater. It takes the biggest problem out of the progressive. They seem to jam up at the deprime station, and the priming system can be problematic. He bathces for Size/deprime, and priming. The rest is progressive, and it goes quickly enough to suit him.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.