Having played around with the prototypical installation that I set up recently, I've now decided to take the plunge - having sussed out the connectivity in Islington-by-Sea as well (see a post to come that I started recently in a pub but then lost and is still to be rewritten). I'm planning on setting up a dual-boot powerbook, with the main focus being a debian system, but a "backup" macosx partition of about 20GB and also a shared media partition where I can store music - and any other files I wish to share between the two systems.