Been playing Resident Evil 4, for old times sakes, and the idea of escort missions in Dark Heresy came up in my mind. This led down a train of thought of how one might best keep their ward alive, and methods of last resort for when they **** hits the fan, and so I'm putting this idea to you guys, to see what comes up.
How would you handle an Acolyte using himself as a form of cover. That is to say, the Acolyte is deliberately placing himself between a shooter and a target, to obscure the target from the shooter's line of sight. Or hell, an Acolyte possibly taking cover behind dead bodies or something as it may apply.
My original thought was basically to treat the Acolyte as ordinary cover. Obviously if he dodges a shot aimed at the person or object he's protecting, it will hit as normal, but if he doesn't, that the shot's damage to the target is reduced by the Acolyte's armor and toughness value. The Acolyte will take the full damage from the shot, the person behind him takes any damage that exceeds his toughness and armor.
The key point to this is to differentiate itself from the alternate dodge rules in the Inquisitor's Handbook. This is not dodging into the way of an attack to take it for a colleague, this is actually deliberately standing in harms way so that they can't shoot your colleague (or at least have a much harder time of it).