I concur with Alpine , it makes sense to use all available CR, it's just good common sense CRM really, hats off to all concerned - personally, if I ran an airline (unlikely !) I'd want to have as many cabin crew folk as possible to have at least some flying knowledge but then I'm old school from the days when bean counters didn't rule the roost
(in-coming, I can sense the flak approaching already ! - tin hats on folks !)