I've been playing Sophia as a Machinist/Gadgeteer for long time now. She owns several firearms, but the excuse has always been that it would easily red flag her as Garlean, and that Eorzean firearms are too unwieldy to use (comparatively). For me, the only thing Machinist will do is give her a bit of wiggle room in deciding what she can or can't use in public. Hell, I may not even use the job for RP at all; the Magitek Bit minion and the Ninja job serves pretty well for the aesthetic I'm going for anyway.
