HVX200 and Firestore FS100 simultaneous recording???

The Focus website clearly states that the HVX200 and Firestore combo can simultaneously record to tape and drive. This statement is made in the FAQ section. For example, I want to record Pro50 to the Firestore FS100 and Pro25 to tape (as a backup). I can't find info anywhere, that states what settings to achieve this. Has anyone done this. I've left messages with Focus Tech support but no responses yet. Please forward any info, I've got a shoot on Monday. BTW once again can someone at Panny and someone at Focus get together and document the various workflows, so that we, the users, can start to get rolling with these products? BTW Avid (Adrenaline on PC, my editing solution) feel free to jump in too! THANKS FOR ANY INFO!