Though I can see a House Rule being used. No cost for the armour change. Character gets the Scouts Special Rules with the 4+ save. Can NOT take any Scout specific wargear (No Sniper Rifles). Some weapons in the Armoury would not available to the Character. Power Fists, Lightning Claws, etc... Basically, anything that would draw power from the armour (Look for cables).The_Outsider said:No, you cannot use scout type models for HQ, all HQ's have power armour or terminator.