Immunities on PvP

[Rekluse]

I couldn't find a discussion about Immunities on the INT line that was posted this year.  Is Immunities worthless, both in general, and pvp?  When trying to get to Scourge would it be better to go 6-8-8?  It seems like it does so little for such valuable AAs...

[Greggthegrmreapr]

Immunities rocks in PvP, and if you are killing T7 content at level 80.  When it goes off, you will see Reflected pop up off you.  It doesn't actually reflect though.  Would be nice if it was useful in current tier raiding though...  make it block abilities up to level 88...

[Rekluse]

Many Thanks.