Concern about "Branching Classes"

[Limecat]

They've already said you lose carbuncle when you're on the job.. first case I can think of where you will lose (some) class abilities when you have the soul/job crystal equipped.

I don't know that I'd really look at it as losing an ability. More like there's just one summon ability, and you call out the specialized pet for your current job/class when you use it.