I was on BLU/BST yesterday messing around looking for charmable camp fun and I notice no difference in DW from spells as in /NIN. I can be wrong and I'm surely not the (parser/calculator/omg its 2% slower) guy but I see it very useful to have non /NIN /DNC.
If it turns out to be DW1 then SE sure fooled me.
This was also in normal TP gear. I would post my gear if I knew how too.