I, too, am quite interested in the flow hives. I think regarding the amount of honey taken, this is up to the beekeeper, the same as with any other hive. I have friends that when new to beekeeping took too much honey and struggled to keep them alive over winter. At the moment I'm not in the position to have bees, but I'm trying to learn as much as I can for when I finally will have my own hive!