This looks like it has potential. However, it does not appear to be compatible with plugins that insert an extra column into the "Pages" display. I was using http://wordpress.org/extend/plugins/simply-exclude/ which adds options there, but these no longer appear in the Advanced Page Manager display. I suppose you need to look at what those plugins are hooking into, and hook into that too to capture what they're doing.
One other thing - with WP_DEBUG set to true in wp-config.php (recommended), APM is giving some output about use of uninitialised variables.