Thread:Extension talk:NamespaceHTML/Mixing html with mediawiki variables/reply

The extension basically does the same thing as the normal $wgRawHtml setting, except that it applies it to specific namespaces. So the answer to your question is that if it works with  then it will almost certainly work with this extension. And if you find that it works, you may want to add a line or two to the documentation. It seems like a nifty idea!