I did a search on this site and it showed that for racials :

pve : tauren>orc>troll

and

pvp: orc >tauren>troll

So i've totally discounted trolls. However it occured to me that my shammy team will be doing the usual instance runs, but that they will also spend a lot of time in BG's.

I've always felt the weakness of the shaman is a lack of CC so figured that it might actually be nice to mix up my team between orc and tauren shamans.

My question - before I roll my mixed tauren/orc squad and discover at level 63 that warstomp is rubbish, is warstomp an effective stun in PVP?

Has it saved your life in instances?

Is it a racial ability you wouldn't like to be without after having it?

Has it ever come in useful in addition to staggered earthshocks to stop those pesky aoe mages?