I've added a clWiki converter to RubLog. Here's how this clWiki repository looks through it.
The converter came together rather quickly, mainly because the underlying file structure of clWiki matches what RubLog expects.
One downside of using a Wiki for blogging is that the default Recent Changes view shows every edited page, even for pages irrelevant to the blog. So far, I've worked around this by requiring a “publish” tag in the page content for BlogKi. But I'd have to hack into RubLog to make this happen. As it stands now, the RubLog view shows every page, even the ‘behind-the-scenes’ pages, which makes for quite a mess.