The Flow system makes it possible to harvest without having to open the hive.
The Flow system will still need to be manipulated in order to harvest.
The Flow system reduces harvest time, because there is no need to prepare or clean up after using equipment.
Because beekeepers can only harvest one frame at a time, the Flow system actually increases harvest time per unit of honey.
There will be fewer stings, because there is no need to open the hive to harvest, and the bees remain undisturbed by beekeepers.
There will be more stings, because bees are still likely to rob, unless additional equipment is used to keep them out of harvest process.
Flow Hives no longer require opening for inspection and harvest.
Flow Hives will still need traditional inspections, and they are heavier to lift.