It makes my skimmer a no maintenance affair for me. When my external reservoir is full, I empty it, which is monthly. Every 6 months I'll clean my skimmer pump, air line, and the auto neck cleaner. I'll pay $150 for that any day.
It's like the ATO of the nutrient control world. Something you're usually a slave to every 3-5 days becomes a non-periodic task for you from that point.
Now if I can get an auto alk tester, I'd be in heaven.