Raid Spoils: Coven Clawed Fiend and Urghul

I'm a member over on the All-Dark-Eldar message board, the Dark City, and every christmas they run a Christmas Raid. It's kind of like Secret Santa for the Dark Kin: each participant pledges to give a model-related gift of $20 value or more, and each participant makes a request for something they'd like in their army.

When I drew my "victim" for the raid, he had requested Clawed Fiends or Coven stuff, so I thought this was the perfect excuse to complete my proof of concept model for a feral Grotesque to represent a Clawed Fiend in an all-coven force. As I detailed in my previous post, I used a Vargheist/Crypt Horror as a basis for it, added in some Talos bits and a Nagash spine, some Greenstuff, and—BOOM—Grotesque Fiend:

Grotesque Genus: Options for Converting Dark Eldar Grotesques

EDIT: I updated this article on 12/28/2016 with a new options and some more pics, and I'll try to continue to keep it updated as it's one of the most popular posts here.

Anyone familiar with the Dark Eldar scene knows that there is one big, burning question from anyone with eyes, limited funds, and even a passing sense of aesthetic rigour.

What am I going to use to convert Grotesques?

"But," I hear you saw, "GW already HAS a model for Grotesques."

Yes, that is true, but the thing is expensive, statically-posed, lacking on additional bits, and, well, UTTERLY GROTESQUE!

I that way I guess it's perfect for representing the unit that it is meant to, but I certainly cannot respectfully field that "Breakdancing Bigfoot"(TM someone brilliant who isn't me) in my army—particularly when I put so much work into converting so many of my models.