How are you going to use Allies?

[daboarder]

I'm going to be modelling up a competitive tournament army based on the dark mechanicus, going to be either Mech or foot slogging depending on which is more appropriate with the new rules, think chaos Iron hands. its going to run with some allied traitor guard that will be based on traitor vostroyan's.

Im thinking a sort of dark mechanicum/chaos dwarves/bionic/daemon engine style list.

so things like as many sorcerers as I can pack in leading a very shooty army from hell.