How is enh Sham in HL PVP ?

Hi guys !

I was wondering how enh Shaman is good at HL PVP ? I've seen a lot of Sham complaining about their lack of survivability but some others completely arguing that it's still a reliable class which can compete with almost each class.
BTW by HL PVP I mean BG, arenas & World PVP but with good gear.
Thanks for your help ! :) :)

enhance is fine in duels, arenas and bgs as long as u have a decent warrior hunter or holy pala with you