These come to mind.
http://i943.photobucket.com/albums/ad272/Skrakar/possessed-orks.jpg

Deamonhunters codex, 3rd edition.

So while it's not a specific section of lore, it is professional artwork from a published codex. So it should have some merit to it.


As for Urgrugg guiding us through the warp without a gellar field? Well, deamons are nice, especially if they are eating your brains.
Ork vessels don't have gellar fields, true, they instead have the ork psychic field protect the ship. And "Big pointy teef which scares da demons away." quoted from battlefleet gothic.

So yes, we could go into the warp, and travel through it. However we don't have the means of protecting ourselves from the warp itself.
For even chaos space marines use gellar fields, they are nifty devices you know.

We might be able to bodge some large ritual performed by Zuriel and sacrificing a large portion of mortals to perhaps protect a ship from the deamons of the warp. The key word being perhaps. Also it would take a lot of time, time we don't really have at the moment.

I say we go for a cruiser, one with a nova cannon :D

Also [@Necroes], while your idea and vision of Urgrugg is a glass-cannon, we haven't really seen that aspect of him.
So we should perhaps think of that.
I should think of that, how powerful does my character appear to be?
I dunno, i'm far to cryptic.....
I need to get a dragonscale power armour, otherwise i'll probably go down from like one bolt shell, unless i get hold of some sort of warp or non-warp protective field.
Displacement fields are my favorite, by i'm not getting one of those :/