What about a perk/trait that's called "Ambidextrous", which let's you dual wield light melee weapons and fire arms like knives and pistols. Of course skills and stats matter aswell, like Strength, Agility, Guns (even Energy Weapon for laser and plasma pistols) and Melee.
I think it wouldn't involve firing both guns at the same time though. You aim and fire with one gun, and you aim and fire with the other gun. It isn't exactly sharpshooting, I would choose a different weapon for that to begin with. But it would be more used like how you use a submachine gun or a shotgun - short distance and to clear a room. The aiming reticle could even be bigger so that it'd only hit the majority of the times if close enough to you. Reload speed would also be penalized.
I mean, I see using two pistols in both hands to fight an enemy in close quarters as effective as firing a machine gun from the hip (or just without aiming) - you point it in the general direction and shoot. You're not shooting cans 30 meters away, you are more likely shooting a filled garbage bag from like 7 meters away.
Like I said, I agree 100% that it could be put into the game if JES thinks the players will dig it, and no harm would be done.

I was just saying that its not something people do in the real world. Your assumptions above are interesting, but in real life its just not something people do. In a real gun fight most people run out of ammo in their hand guns and re-load (thats why we carry clips around in our pockets, and why changing clips is a major part of learning hand-guns in classes). If you were dual wielding, you could not re-load, it would be a single burst of insanity without any real ability to aim at a target. Its not a situation where you would aim one gun, shoot, aim another shoot - that would take forever and when under fire, if you have the enemy sighted in your right hand, your going to keep shooting that gun versus shooting once, re-developing a sight picture in the other hand, shooting again, re-developing a sight picture in the other hand, etc, etc - and thats just One factor.
Then there's the famous anology they told us in class about the cop and the bad guy who both got into an elevator, realized who they were and started shooting. Each emptied their hand-guns completely and no one got shot (true story). The point here is that enemy targets Move around, and trying to hit a moving target with just one hand-gun is extremely hard to do under duress, even at close range.
I could go on and on but that would be silly, they will either add it to the game because it's a game or they wont.

I'm just pointing out that in the real world, using two hand-guns is a sure way to get shot yourself and loosing the duel. I 100% agree with you on dual-wielding bladed weapons, as thats very much different from shooting two guns.
Miax