I'd also like to point out that crafters starting in Gridania are at a slight disadvantage. Here's what I came to realize as I'm finally leveling crafting.

You start a new crafting job, get exp, and do a class quest. You get to choose a piece of gear. You then begin another crafting class, get some exp, and do a quest. You get to choose a piece of gear, and this time you can select something else. Do this a third time then go back to your earlier crafts and equip the new gear. Suddenly you find yourself better off than you originally were. This foreshadows how much more advantageous leveling multiple crafts will be. Something that wasn't nearly as strong in FF11.

Gridania doesn't get that 3rd class, so beginners are at a slight disadvantage. Luckily though it doesn't take much longer to gain access to the other cities.