I have! It's so nice! Easy and quick XPing. Things like cooking don't even require you to ever leave the shop (though I'm only level 12 so far). Fishing is so nice! Just one button to cast and one button to pull it in -- none of the active fighting like in FFXI. Gathering crafts are great -- at level 8 you get endless stealth, so you can fish or gather near aggro mobs and not have to deal with them.

The only downside to them is how distracting they are. I hit 15 on my main yesterday (to open airship travel to the other starter cities) and have been doing nothing but crafting since!