SharePoint 2010 and Reporting Services add-in - multiple versions supported?

Hello,

I would like to try out Reporting Services with SharePoint 2010.  I already have the Reporting Services add-in installed on the WFE for SQL Server 2008 R2, but not configured. 

At this point I thinking it's best to move forward with SQL Server 2012.

Can both the 2008 R2 version and 2012 version of the Reporting Services add-in exist on the same WFE in separate instances? Or do I need to uninstall the 2008 R2 version first?    

Thank you in advance,