Ya grot luvun nobz if we sidez wiff dez ere runtz datz juz that much fuwet fightz we ave ta gitz inta..so i say "lump" zogg off ya spikey runt boyz.

unlikely, you did actually read what I wrote yes? As old as the Eldar. They reproduce like fungus and quickly so. They existed for many many years before the nids. Nids do also reproduce quickly, but I have been lead to believe the ork population is way up there, even if they do kill each other all the time.

Let us not forget the mass purges of ork scum done by the imperium and xenos alike.

Stupid 'Umie; no matter how many timez yer kill n Ork da Boyz alwayz come back!! WAAAGGH!!!!

Thats is but one ork empire amidst the millions that exist

Orks and chaos allies,
option 1:


option 2:

Can Orks loot vehicles which are already possessed by Daemons? That is the real question here.

In lore Orkz loot anything. In the game, I have no idea.
Besides, isn't the real question, "Will Orkz ever team with Chaos to take down everyone else?" Since that's kind of the purpose of the whole thread...

The question is not wether Orkz will team up with this or that faction. The question is how many weapons the faction is willing to bribe the Orkz with, and how long it takes until it finds said weapon pointed at itself.

Don't forget the Gubbinz; they're equally vital to negotiations.