1. Separate formation and no.
2. Would count as two different formations.
Printable View
Are you sure about that? In some of the raw gameplay footage I've seen, there are still "hidden" formations in playbooks. For example, in the Utah gameplay footage (at 2:50), you can see that their Ace F Pair Twins formation has some hidden Flex plays.
I'm betting those hidden plays will be available to choose in custom playbooks as part of the "regular" formation -- although taking them will probably count as an extra formation.