I sat down with a friend this week and just muscled through the Warlock Engineer. I'm really happy with the results. I kind of winged the paint scheme to a certain extent. The base isn't done yet, but the rest of the model is. The base will be getting a glowing green slime treatment as well as some dead looking grass. I should have pictures of that up pretty soon.
EDIT...
Finished the base! I'm so happy with the look.