Who’s using RunPHP with WP2?

On Matt’s plugin compatibility page it says RunPHP plugin might not work after upgrading to WP2.x. Therefore I had disabled this plugin. I remembered why I wanted the plugin before, so I tried it again, and it seems to be working (allows me to put a Comment area on a Page, and a list of authors). Is this going to work for me, or break something I haven’t realized yet?