Malte, I updated the document.
It's still not completely tested with this version (I'm only through the dev branch portion), but they're pretty close:
http://rubick.com:8002/openacs/arch
I think once the document is done, it will be a very robust way of doing things. I have set up a website with a similar configuration, and it is working very well for me. (Much better than CVS ever did).