Personally, I'm running the Shado-pan rep trinket by choice. Almost every time it procs, UVLS procs shortly after because of the 8800 haste boost. As Demonology, this gives me an extra tick on Doom at 100% Crit. The only time the Int procs would be better is during the opener, imo.
I hadn't thought of that. I may have to try this out.