Coming back after long hiatus so I'd like to ask something which is less easily verified by simply looking up some simcraft

I won't really be raiding, mostly dungeoning and doing pvp so I don't see a reason to go Demo over Affliction ('dat 4 set tho). And Blizzard at least claims they'll be monitoring Affliction to see if it needs a buff due to the Reap Soul changes

However would I really see a use for Destro with the content I am doing? Should I go aff/demo?