I am wondering just how crucial the expertise cap really is. I am in mostly end game ICC 10/25 gear, which unfortunately is desperately lacking in pieces that have both enough ARP for hardcap and enough expertise to reach cap.
I am currently running with the http://www.wowhead.com/?item=47881 as my other trinket next to DBW, and it is replacing a Greatness Deck.
Without the craptastic trinket i sit at 17/17 expertise, but with the trinket I reach Hit, Exp, and ARP cap.