I Won (OK so the contest was random...)

I recently won a contest over at SantaCruz Warhammer for some models from Pig Iron Productions. I will post some pictures as soon as they arrive. I will be looking for some ideas on how to include this models in an army (any army...) as either a conversion or as is. I either play or know someone who plays every 40K army and if the idea is cool, I am not opposed to giving the models to a friend to include in their army.