I don't know about the parry, but I very rarely knifed with a shield anyway. Skoll and Hati is a very fast weapon even compared to other knives, it's like the new lag input nerf they gave to all the other weapons - they did the opposite to this thing. Even if you can't parry with it it's still amazing.

I'm going to have to go parry some stuff and see how I feel about it.