This is why I'm dual wielding on my Sorc: 3 Willpower accessories, 2x Molag Kena, 5x Julianos. Dual wielding lets me have the 2-piece bonus from Torug's Pact swords, which I'd lose if I went with a 2-
I equipped 5xgolden divine Julianos, 2 Torugs (also golden divine), 1 Kena(same), 3 Willpower(spell dmg arcane) on my sorc and took Apprentice mundus. That's what I got:
The difference is 189 spell damage, because you cant have Kena proc and Torugs 2pc bonus at the same time. So non-vMA staff doesnt get any set bonuses.
Last weekend, after finishing the retirement of my Sorcerer in favor of my Templar, I was moving items back and forth through the bank very quickly and suddenly a Legendary Sword of Torug's Pact, Nirn