However you will have to take care about override.ini.append.php consistency for both siteacceses. For example when you add new template via admin interface.
So then If my pagelayuotoverride.tpl doesnt exist in the siteaccess SiteDesign, ez publish will look for a file with the same filename in the directories found in AdditionalSiteDesignList and display that one instead. Am I correct?
(When I do this, and clear cache, my site is blank under one language cause ez publish cant find my pagelayoutoverride)