I still want to be a summoner, but considering I swordfight irl, I'd probably be a fighter (except I don't do armored fighting so not Knight).
Except I want magic, so one of the various other kinds of knight, probably. Dark knight, magic knight, paladin. FFT has some extra-cool unique knight jobs like divine knight, holy knight, or holy swordsman; I would not at all mind being Orlandu's class, I tell you what. I would definitely accept Red Mage if need be, though I'm only just starting to get into sidesword (which is just one step before rapier), so it's not the top of my list.
Geomancers usually use weird stuff like bells as weapons, BUT in FFT they can use swords. Since they're less knight-armored and more magical but can still fight with swords, Specifically-FFT Geomancer might be a top contender.