Darkmaster, just a note on Sielwoodan. He is just like that. He loves to gives critics, or should I say, it's just impulsive from him. And his critic are generally crude because he simply doesn't talk much. He favor silence over words. "La parole est d'argent, mais le silence est d'or". I suppose you know that.
And for the skills, they are generally used against NPCs, and even the best diplomacy won't make someone fall in love with you if he is hating you. Sielwoodan has always judge people for there actions, not there words, that's how I play him. But still, as Sarlis is pretty charismatic, I decide to put some doubt in Sielwoodan heads, now if you prove yourself with soem action, he will like you faster...
And I'm from Montreal too, and I've heard too about what Jean Chretien did in China, and I totally approve you on that point.