Rystic
Turtle Wizard
When I think Pirates and the Arcane, I think more along the lines of voodoo. I think more of the African-derived Caribbean superstitions than of the European Roma. A certain character from Pirates of the Caribbean comes to mind.
Voodoo is too Doviello/Clan of Embers-ish. That kind of magic is usually associated with being uncivilized, not being pirates. Really, though, it depends what you think the Lanun are. I've always thought of them as the guys from Sid Meier's Pirates!
On another note, I support the Gypsy model, because I secretly hope the adepts are replaced with the Hippie Barmaid.
http://www.armchairgeneral.com/wordpress/wp-content/strategy/pirates/pirates3a.jpg