No stored credentials for SSRS integrated with SharePoint 2013

In SharePoint 2010, I was able to report with my integrated SSRS on SharePoint lists using stored credentials.  This allowed me to set-up subscriptions for these reports.

I find now in SharePoint 2013 that I must use claims-based authentication and claims-based authentication does not allow stored credentials.  If I upgrade to SharePoint 2013, I will not be able to produce reports on SharePoint lists with subscriptions.   Is there a work around?  Am I misunderstanding?