Supported Configuration - FIM FIMSynchronizationService DB

I need to install two FIM servers in an environment. One will be used for Galsync. The requirement is to use an existing SQL cluster.

In the following TechNet link it describes the registry key were you can update the DB name.

http://technet.microsoft.com/en-us/library/ff800821%28WS.10%29.aspx

Could someone confirm if this is a supported Microsoft configuration to rename the DB?

Thanks,