My friend AshAxe uses these models. He uses the Plague Demon for his
DP as seen below:
Now, he uses the Lord of Pestilence as Oblits since they are a hell of alot smaller than the Plague Demon. Here is two standing infront of a
COD building:
I would not care if you use them in a game but in game terms the
LOS on the the Lord of Pestilence is a bit off since they are so small. Here is a picture of the the Lord of Pestilence and the Plague Demons out on our Adepticon 09 display board. This will give you an idea of the true size of these models.
I hope this helps you out some.