stat priority question (demo)

[Grinthe]

It is most likely a silly question, but on elitist jerks (http:// elitistjerks.com/f80/t106168-4_0_pre_cataclysm_raiding/#Demonology) our stat priority is shown as the following:
Hit (until 17%), Haste > Int >> Mastery = Spellpower > Crit

Does this mean we are meant to gem pure Haste? Just seemed odd to me and I am about to do some regemming so, didn't want to do something silly you know.

*** My question is answered in the demo 4.0 post which I missed, please delete or ignore this.