I've been bit by the mech-bug. The new Cult Mechanicus stuff that I've seen looks really really cool, and I think it's about time that my Iron Warriors got themselves some help from a Hell Forge.
So my question is, what's the best way to represent this, rules wise? I was initially just going to get a bunch of Skitarii and Servitors with some spikes and use them as cultists with a Warpsmith and some daemon engines.
But the new Kataphrons and Magos are too damn sexy not to get. So what are people's experiences using non-battle-brother allies? Do they work?