Early in the campaign, it becomes clear that an effort was made to make the experience unique for different kinds of characters. For example, there are some early quests that cannot be solved happily without being able to effectively persuade NPCs. Likewise, it appears that class skills like Animal Empathy and Tracking could be put to good use in some cases. It seems that evil characters have some different choices as well. My perception is, however, that as the game progresses less and less of this is apparent.