I remember a rather nifty conversion using Necron faces as face masks for human soldiers (Vessorine Jannisaries I think). I think it invovled cutting the face off human heads and replacing with the necron face, so
GS use should be minimised and jsut needed to fill in gaps.
Automatically Appended Next Post: And here they are:
by Dakka user chrisyella
more on his dakka gallery.
Automatically Appended Next Post: Or there is this inspiration
http://www.penny-arcade.com/comic/2013/08/14