as things stand I don’t think there is much scope for large scale commercial use of flow frames… But for back yard beekeeping- I think they are ‘the bees knees’. For people with one or two hives they they have easy access to- they are just fabulous. My mother is a good case in point- she only has the one hive and she harvests the flow frames by herself despite being nearly 75. I have no doubt she has ZERO interest in using a honey spinner- or crush and strain. She loves her flow hive and is producing maybe 50- 65 KGs of honey every year from it
As to the quality of the honey- I think there isn’t much in it- but in my experience the flow honey is absolutely top notch with absolutely minimal processing. I have spun traditional frames- and harvested flow frames from the same hive and the flow honey was superior- it candied much slower than the standard honey.
the honey I harvested two days ago was so thick and tasty - it came in at 15.2% water content which is extremely low I think. It is ready to jar as is- needs no straining or heating- just a sieve between the flow tube and the bucket to catch a few tiny particles at harvest time.
It could be that flow hives are not well suited to climates with very short honey seasons. We are blessed with 9 months of productive weather here in South Australia- and all our flow hives have performed very well.
EDIT: one possible use for commercial flow frames I thought of was in a Slovenian type honey wagon/trailer where there are multiple hives built into a mobile trailer. I could see one of these with a honey tank at one end- being used for pollination services and then migratory honey production. To me it seems like flow frames could potentially be a winner in a set up like that… but it’s just an idea.