Hello Jan Paul,
I'm one of the volunteer admins for a civic wiki in Portland, Oregon (USA), PortlandWiki.org. For the past couple of weeks I've done a lot of research aimed at finding some way to improve ease of use, particularly with editing articles. In the age of Facebook and Twitter, a lot of people who might otherwise want to contribute to a civic wiki seem to have little patience with wikitext.
While researching, I stumbled across your InlineEditor extension. I really like it, and want to install it on PortlandWiki. I've looked at the code and have gone through your documentation and everything looks good, from what I can tell (I'm certainly no hardcore coder).
I also set up a little test sandbox here -- http://www.telecafe.org/smw/Sandbox -- (actually that whole wiki is InlineEditor enabled). I haven't tested it extensively, but the tests I've done so far have gone well.
Is there anything you might suggest I think about before installing your extension on PortlandWiki?