Ok, I've finished making an example of doing the Inkscape news with WordPress. Please navigate to http://inkscape.turnipspatch.com/ and have a look. If you want to try out the admin, then go to http://inkscape.turnipspatch.com/wp-admin/. The us.erna.me and pa.ssw.ord is "Test" and "inkscape" respectively. This username has full access privileges -- I might have a change that if abuse becomes a problem, but I don't think the people on this list would be the ones to do that so we'll see how it goes.
Let me know of any opinions you have, whether you think it's a good/better solution etc.
Jon
PS. I decided not to create a "theme" for Inkscape as this would mess up interoperability with the non-WordPress part of the website, and also make it hard for people not familiar with WP to know what to do when editing pages.