A couple questions around this idea.
Are there any liability issues? Could a company who suffers damage from a Journeyman's work hold them liable.
Would there need to be contracts ion place. The wayward traveller arriving and working for lodging and sustenance may not be as easy as it sounds. Especially if there are IP issues etc.
I like this as opposed to the current scholastic intern system which in some cases seems to create a division between those students who can afford the work experience and those who cannot.
Does the German practise have some form of legal or legislative backing behind it? It would be interesting to understand how this operates in these European countries.