I don't know if it was mentioned, but I've been looking over the Astro video they showed at PAX. The starglobe is kept on the back like a PLD's shield and the cards are held on the hip (unless that's part of the Astro's outfit?). Even though the starglobe and cards go together, I think they might be considered 2 different objects. Ie, a main hand and off hand weapon. I think that's rather interesting, as PLD is the only job to have a main and off (aside from THM/BLM and CNJ/WHM when leveling, as they had a couple of one-handed+shield combos).

If they are a main and off-hand, I'm kind of curious as why they went with that approach. PLD's shields have a block rate, would that mean that the cards (I'm gonna assume they're off-hand) will have a special benefit like that, but just for Astro?