The Grand Company Chocobos (please stop calling them Personal Chocos..those come later) have those nifty flags/banners on them. Perhaps Crafters will be asked to make them. It also could be that the entire Materia System is GC related.

I am pretty certain that Crafters and Gatherers will have Company Quests soon but I have my doubts that they will be awarded a Battle Chocobo (Why would they?). I believe that they hinted at a "Pack Mule" Chocobo (that you can walk beside) which is probably only available to Crafter/Gatherers.

BTW, I looked through all the Official Personal (GC) Chocobo notes and I saw nothing that stated nor implied that Crafters/Gatherers could not get one. What is the concern? Is it that there are currently no GC quests for craft/gather to earn Seals?

If that is the worry, then hopefully 1.19 will have Craft/Gather quests for seals. If it does not, then start worrying.