Not really an answer to your question but... I got very interested when I heard about warre hives, as offering a simpler and gentler method of beekeeping over my current national hive and doing it by the book (ish). After reading up on the subject, I felt that the elephants in the room were disease monitoring and swarm control- both subjects seem to be skirted around. These, combined with a feeling I was getting that crops would be modest, decided me that the minuses outweighed the pluses. I too would be interested to hear of comparisons, but I suspect they may be hard to come by- as it is a different philosophy of beekeeping, rather than a different method, I suspect not many people keep both.