End-to-End Virtual Machine Backup

As of the end of last year, there are a new breed of virtualization backup tools (Veeam, vRangerPro, esXpress) now available, end-to-end backup tools (Acronis, Symantec). These tools will backup a virtual machine to tape using built in mechanisms instead of requiring scripting, or multiple backup tools. The question is: is this necessary? Should virtual machine backups be dropped to tape at all? Something to watch through out the year.