On the Armies of the Imperium CD ROM it will allow me to place some special weapons on the Grey Knight fast attck squad I have allied with. Since it is in there is it legal or is this just a glich in the CD. It will let me validate the list and says it is good to go.

In other words if the allied DH are with the space wolves they get some difference in wargear. It doesn't sound right according to the rules but maybe there is something I am missing to allow such things. Let me know.