Nice artwork "Frazetta" not seen some of these before, lets hope he does more...
On the topic of this painting challenge I've just undercoated a few of each fraction to do a trial paint job for each race (Horde troopers, Jihad infantry, Soldat troopers) to get a feel of how I want to paint the whole lot up I'll post pictures once I've got some base colours on them.
I'd forgotten how heavy the SOR miniatures were