I was pleasantly surprised by the presence of profanity as well, it doesn't feel out of place either since it compliments the style of NPC dialogue quite well. I grinned like a fool when I stumbled across an NPC telling someone to 'bugger off' in a tavern in Gridania. It certainly added quite a bit of atmosphere and depicted the typical mercenary/tavern patron rather nicely. Incidentally, a lot of the NPC dialogue reminds me of FFXII's and Vagrant Story's style, which is brilliant since they're two of my favourite RPG's in existence.
