Holzbau-Schweiz sounds similar to the French Compagnon system. Essentially you either go to college and work your way through a series of diplomas to become a "qualified" carpenter (School system) or you join the Compagnons de Devoir and train with one or more companies / carpenters. Traditionally this culminated in a "tour de France" where you would travel around the country learning with master builders in different areas in order to learn the full range of building styles and methods used in France. The program still runs, and I believe, still operates on the same principles.
Tedd Benson (not sure if he's still an active member of the guild) has a lot of experience of this system, having trained at least one Compagnon that I'm aware of.
Not sure if this helps the discussion at all mind.
