Possible to run multiple Reporting Services (SSRS) instances on different machines with databases on same machine?

Question

With SQL Server 2012, can SSRS instances be setup on two different machines, with both instances using the same machine for their SQL Server databases?

Machine 1

• SQL Server 2012 Database Server
• SSRS instance 1

Machine 2

• SSRS instance 2 pointed to machine 1's database server

There's this document describing installing multiple instances in 2005, but on the same machine. Can you point me to a better resource for our design? Is this still supported on 2012? How are the SSRS databases (ReportServer, ReportServerTempDB) created for the 2nd instance?