Crikey! The grass doesn't grow under your feet
Adobe have not said that SharePoint 2013 is supported with RH10. In fact they have made a point of saying that the RH10 functionality that integrates with SharePoint only works with SharePoint 2010 or 2007. The Source Control functionality is SharePoint 2010 only. It is possible that Adobe may have tested RH10 against some sort of beta SharePoint 2013 release but I'd guess that you use it at your own risk.