I think Craig was referring to using "incremental backup capabilities" of the 3rd Party Software (Carbonite, Crashplan, etc.) AC's Backup utility is not incremental.

Also, I was checking out that iBackup SQL Backup. Looks like you need the SQL Password which AC won't release:
http://www.ibackup.com/online-backup-sql-server/ibwin_new_mssql_backup.htm