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The Black Ice profession is NOT PvP only. To be able to complete the PvE skirmish, you must have Black Ice armor.
Also, there is new PvE content. There are two new zones in Icewind Dale with a PvE campaign similar to the two prior expansions. Additionally, they added Heroic Encounters which is PvE content.
I'm not a fan of PvP, but it had been neglected for a while so I don't begrudge those who do like PvP from getting something new in this module.
There is actually very little new PVP in the patch. It's mostly all new PVE content.
There's an open PVP area but you can easily avoid it entirely.