Yes, with v10, using policies and templates you can have a Duplicate to Tape immediately follow a Backup to Disk job.
One thing here. You do NOT want to do a standard "Copy" job when backing up disk based BKF files. Make sure that you specify a "Duplicate" job. This way you can restore directly from tape, rather than having to restore the BKF files to disk, re-cataloging them and then restoring the user data.