When dual wielding two melee weapons I don't get the bonus damage from the Single-handed ability, only the Dual Wield ability. I'm wondering if there is a balancing reason for this or if it is just an oversight, because a character dual wielding two wands gets the bonus damage from the Wand ability, as well as the benefits from the Dual Wield ability.
Naturally the same goes for a character with a shield, they get benefits from both Single-handed and Shield Specialist.