Belafon |
As written, no. The Aldori Dueling Mastery feat specifically says "when determining the effects of weapons used by a duelist."
Since this appeared in the PFS forums, I'm afraid the answer is that you can't use it as a swashbuckler piercing weapon with Aldori Dueling Mastery. However, the Aldori dueling sword is a perfect candidate for the Slashing Grace feat.
In a home game I'd probably let it work. The swashbuckler class didn't exist when the Inner Sea World Guide was printed.
Flagged for movement to rules forum.