WillB Your drawings look great, really wonderful. I too have mulling ove the way to marry the two systems together. I was worried about access of the bees as , I think they can only move around on the bottom under the flow frames and the entrance side. Is this enough? The other thing is where do you put the entrance? At the top like Michael Bush or lower down?
This brings in the thought are the brood frames recessed or not ?
I have added a photo of the hive I have been trying to nut out.
The insert of a frame with holes in the top found on a site of a Cathedral hive. The bees seem to use it to move around.
Cheers to All 
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