If a character wields two weapons, and one of them has the Defending quality, does he have to take the two weapon penalties to gain the armor bonus? For example, a character uses their move action to get into position, she can only attack once, she uses her main-hand weapon, but is still holding the defending weapon in her off hand, would she have to apply the penalties for two weapon fighting to gain the defending bonuses, or could she use her full to hit bonus with the main hand and still receive the armor bonus? or something else?