A group of folks have been talking about pdf and ez in open funding, <i>http://ez.no/developer/open_funding/open_funding_projects/pdf_templating_export</i>
Another eZ Partner asked about this recently, <i>http://ez.no/fr/developer/forum/extensions/ez_flow/quark</i>
eZ Systems mentions such a flow of content between Quark and eZ Publish, <i>http://ez.no/solutions/digital_media/online_magazines</i>