Quite.
I mentioned hygiene early on, nothing to do with anything other than open air production. All sorts can end up in the buckets along with the honey and filling all those buckets sounds like a long wait. Took ten supers off last weekend, I wonder how long it would take to flow that into buckets.
I don't think many flows are drained in the open air...most did the same as I did...used a tube and a cover over the jar....so no exposure at all.
I think also you haven't quite realised that the honey is harvested as it is capped....the empty frame can then be refilled. So you wouldn't really be adding lots of supers..well that is the idea. I will be interested to see if it works like that if we get a good summer next year. It doesn't take very long to drain a frame...and you have to be aware that once you walk away with your bucket or box of jars....that's it job done. Whereas....when you get home with your supers...you have to the process of extraction...done in the air... in your chosen location...filtering...settling...jarring up.
I'm not knocking the normal extraction from supers....as I have some still to do...but the extraction from the flow frames was amazingly easy.
As for hygiene.....I think the honey is extracted under good hygienic conditions of the flow is at least or even better than honey extracted by crush and strain and by machine.
We have looked at the research about honey in general and it applies to all honey not just the flow honey.
I'm sure beekeepers use disposable nitrile gloves, clean the extractor between extractions, extract in a clean room, keep pets and insects out, clean the filters, use clean jars and so on.
However...in the short time I have been a beekeeper...I have seen dirty beekeeping suits, supers on the ground and put in the back of vans and cars without anything clean under them, extractors caked with wax, crush and strain using bare hands, pets wandering around, flies and bees and wasps in attendance. I don't suppose I am alone in witnessing these unhygienic practises.
I tried out the flow and I like the flow extraction method...I'm not trying to convince you that you should do it but only to inform you of what happened and what it was like to extract in that way.