Yeah, it doesn't really fit with the party's dynamic, which is so different than what we have in most JRPGs. As was noted in another thread, they're not going out there trusting every stranger and hoping to become one big family. They're all much more reserved to one another and don't really interact much aside from those whom they were already acquainted with. And heck, even Fran and Balthier, who basically have the strongest relationship each other in the game, would feel weird exchanging battle banter since their whole thing is that they communicate perfectly without words.

And yeah, basically everything Wolf said.