[quote=ASTA]
Technically, duel-wielding is a Hollywood gimmick that really only exists for Rule-of-Cool and nothing else. In reality, it's highly ineffective to duel wield most weapons, even swords, for the simple fact that using your other hand and arm to handle your weapon allows you to swing harder and faster, block with a shield, fire more accurate shots, reload easier (and faster), handle the recoil of your G3A3's rather savage kick when on full automatic, and throw grenades. In general, holding and/or manipulating your weapon with both hands affords more control.
[/quote]

Unless you're using lightsabers, or some other weapon which requires little to no physical force what-so-ever.

In which case, duel wield ftw.