H2h is just gold when you've got the str/dex advantage, and duergar dagger is one of the best ways to assure you've got that. High hp and imperial defense with daggers, and then imperial offense with fists to seal kills. You have some really fast maledict combos with hurl, artery, vital, etc.

Lots of really interesting legacy choices too, like you said.

I was thinking about a similar build recently, but I'm just not comfortable enough in my ability to play low int/wis with huge vulns.