[quote=Vordak]
ah, to add my 5 cents to the gufire talk. Dire confrontation calls for dire measures, so it stands that a intermediate-high gunslinger will be as good at shooting down moving targets as an agile dodger would be at evading gunfire. Like, Grammathon cleric skilled and higher, because nobody said you could only matrix yer dodging.Also, the equipment play a great role here: dual wielding allows for crossfire, full-auto shotguns are damn hard to avoid being hit by, and explosives are yet another feasible counter-measure. Tricksters may try using armor with hidden guns inside to take thier opponent by suprise, especialy if it's some really bulky suit, or deploy turrets as low-tier minions to be both a pain in the arse and a good distraction that allows for scoring the killing shot. ...yeah, you probably already knew that all, but maybe not. XD
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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.