Bonjour
However, I'm still not convinced about how you ensure that Wikiversity and Wikibooks are "totally independent". Like in the example you give about the computer science materials - how do you ensure that other materials don't 'end up like a book'?
When faced with this problem, we look at how we are changing, or may develop lesson (currently there is a lesson on Blender: http://fr.wikiversity.org/wiki/Blender who remains on wikiversité, but when you look at how it is built, we think immediately that it is very similar to what you see in a book. So what do we do? It suggests in wikiversity or we give to wikibook?). If you think that the course will look strongly at what we can see in a book, so we propose to transwiki-export pages to wikibooks. On the one hand because we (the community) does not know how to change this kind of knowledge into something that separates what wikibooks and wikiversité. It is in a situation where the border line is not very clear.