I want to gear a pvp healer and from what i seen resto shams are awesome pvp healers when played right? I have played it abit and love the utility. Doing some sota call to arms games and taking care of demos and players myself really got me going more into it.
I've got a disc priest and a resto shammy. Both are really fun but i found on my priest (which i had before my shaman) that in arena's and battlegrounds, a good resto shaman is hard to take down and look fun to play. Disc priests have some great moves but i found it frustrating that i couldn't interupt or cc, so i tried a shaman and fell in love with it.
My advice, give it a go and see what you think, once u get instant ghost wolf you'll enjoy it so much more too.!