I will bring up realism! HAVE AT THEE NAVE!
Dual wield works to a degree, but realistically you cannot: Reload with a gun in each hand and your accuracy drops dramatically because both hands even for some ambidextrous such as I, is still off. No…seriously. No skill can compensate for this. It falls to perception and literally making your brain “GUESS” with the off hand gun. If you say"NO THAT AINT TRUE!"…tough! It is. You either aim reasonably with one gun and the other is “Perceived guessing” or you Perceive guess both. In either event you take your chances.
Can you do it? Of course! Would you like to test it a real fight? I’d enjoy you as my enemy, please do this lol XD
(This was not a boast or taunt to actual fight irl. Seriously. The context was Player character to mob/NPC ONLY!)
The flip side: I’d also enjoy the skill or trait ability to do this to a degree. If I have a spike/blade on a pistol for example. I use my trait and it gives be a bonus to hit/damage if I slash first and my reactionary “aim” is better or something like that.
ex: arms length slash/stab (trait takes over) I get a aim buff(because I’m 1 tile over right? Ya know, to slash/stab) and I shoot.
…in fact that would be a great trait more than a skill. Gun-Fu trait. When 1 tile away and using a pistol; with or without a sharp mod. You either bluntly/slash/stab attack and gain an aim buff to a shoot attack the next attack turn.
How about it?