SV itemization is ok for some slots of gear. For others it is totally crappy.
Until last week I had to use two leather items as a SV hunter since those gave really good amounts of agility which the mail items did not offer (belt and pants).
E.g. I equiped
Skulker's Greaves until last week (with 3x8agi as gems and +50ap/12cr enchanted).
After our 5th kill of voidreaver I finally got my
Void Reaver Greaver finally an item really good for SV hunters (and of course still excellent for BM, MM hunters and enhancement shammies).
My
T4 pants are on my bank for at least 2 months (nobody else wanted those and I bid on them just in case I wanted to respec in future). Thats correct, T4 pants are crap when compared with a leather item droping from an easy boss in Karazhan.
So, now I'm wearing only on leather item (which I'll likely keep until WotLK comes out).
For every class there are some belt recipies dropping in SSC and TK. The one for hunters is quite nice (
clicky) ... for BM and MM hunters. For SV hunters the PvP belts are better and the
rogue belt is the best belt for SV hunters until (and including) MH and BT.
So I'm wearing a leather belt in my PvE equip for which I occasionally get much love from rogues because I wear "their" belt (although I bought this thing from the AH, did not want to compete with my raids rogues and feral druids on that item).
Hmm, got a bit sidetracked here. End of rant.