I made a suggestion thread about Dual Legendary Pistols shortly after the 3 current Legendary Pistols were released.

Dual Pistols are still pistols imo, & was very disappointed with us true Ops being left out. Had a lot to do with needing a shield for the set bonus. Remember these were the 1rst Legendary Weapons implemented into SL. But still, no real Op wants to wear a shield. We want to dual wield like the class was designed