Pathfinder: Spellslinger + Gunslinger question

[Celticbear]

So one of my best gamer friends and I are having a debate about a character idea I had. The argument goes like this: Since the Spellslinger class feature, gunsmith, differs from that of the gunslinger class feature of the same name, by multiclassing or a gestalt game you should be able to get two guns, right?