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Most likely the latter. Is useful if you farm in ultimate quests, where you can inflict status on monsters quite easily; also works if you make a Hu/Fi and a Te/Fi on a single character. Other than...

Power: Austere
Utility: Seiga
PP: Orbit

You'll probably enjoy wired lances and/or partizans more. Swords are powerful, but their attacks are slow and medium range... If you don't know how to use them:

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Yes, their class description is accurate: "they shine at solo combats".

More specifically, at combats where they can control the number of enemies: AQs, XQs, UQs, and even TAs:

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