We did this with Imotekh and Coteaz in a teams Tournament.
If Imotekh is your Warlord he allows you to steal on a 4+ as well... that is as long as your opponent doesn't have any Orks... buut he is 225, compared to 240... so I guess that is fair.
That being said... the first game they won the roll off to go first, and we decided it would be best to let them get closer to us, the second game was VS Orks, so it didn't work, and the 3rd game we lost the roll to go first and then failed both the roll, and the reroll to steal... buuut we ended up getting second place so it didn't really matter to much in the end.
Peace, Love, and Mass Destruction
Necrons in 6th Edition W: 28 L: 9 D: 5
Orks in 6th Edition W:9 L:9 D:3
F*** that, Barrel rolling monolith all the way.