2 primary weapons would be cool, after all didn't Musketeers in some countries also use rapiers and small swords along with muskets/rifles?

"The King's Musketeers became the first company, popularly known as "Grey Musketeers" (mousquetaires gris) from the color of their horses while the Cardinal's Musketeers became the second company, known as "Black Musketeers" (mousquetaires noirs) because they rode black horses."

Black chocobo mounts for Musketeers?! :P