All the books say a good beekeeper never looses a swarm.
HOHOHO every beekeeper I know says thats a load of bowlocks. I even lost a swarm, one year, on the1st april when the temp rose sharply and before I could look in them at all that year.
Been to boyds house he looks like he is well set up and I find the top bar hive an interesting project. Not for me as I move bees about. I cannot understand why the local beekeepers are so anti/not bothered about giving assistance.
Having read about them they should work but will probably be not so productive as a regular hive. The bullsh*t that some of there supportes give about being kind to the bees is negated by the fact that to get honey from them you need to destroy combs.
Boyds garden is tiny but is suitable for 2 hives. I have kept them in small gardens before and often ask local farmers/ factories if I can use their land with no problems. Towns can give a more varied honey but monculture in rural areas can provide bumper crops if you are willing to move bees. Not moving as in the american way on artics and 1000s mile, but around the local area. I used to take them to the heather but it is too much work and time intensive for me.
You have just got remember as far as bees are concerned they are wild, and the hive you have them in is just a hollow tree as far as they are concerned. They never belong to you you just keep them.
beeman