On the other hand, I think one of them swarmed recently, during the beginning of spring buildup, which seems weird. I hadn't started opening it up yet, because we still had some cold weather coming and I didn't want to leave any brood stranded. I guess I should have.
I'm hoping to try a Lazutin hive this year, which uses frames that are twice as deep as conventional Lang deeps. Maybe that will leave enough vertical space that I can keep the bees in the convenient manner that horizontal hives allow. Anyway, it'll be interesting to try. Should be an advantage in not having any separation between the combs, but with the vertical height of a double deep.