Now that the new Grey Knight models are about to be released, I am tempted to pick up a couple to use with my normal marines. Of course the plan is to use the grey knights as an alternate force for my own chapter. How am I going to justify it in game terms? I am going to use the rules for grey knights to run the force as the full chapter librarium on the tabletop. This will mean that I can field them as part of my chapter during apocalypse games and they will match the look of the other models in the chapter. Well, as the librarians of my chapter anyway!

I won’t be using all the grey knight specific icons and will probably need to remove chapter specific parts of armour as well. A good paintjob, swapping chapter iconography and not using the grey knight helmets will mean that they look different enough from a regular grey knight force.

Being able to represent the chapters full librarium in this way will mean I have a significantly different force and one that can provide a wealth of choice in regards to librarians in my regular marine army. Adding the tyranid hunter icons and some tyranid type trophies will certainly make them distinct. Also the inclusion of some of the trophies collected from defeated daemonic enemies will match in with some of my current marines which have assorted trophies festooning their armour. Finally adding the tyranid hunter force symbols would round them out as members of my chapter.

The added bonus with this is my existing librarians can be revisited and given an update to help them match in with the grey knight models. It would probably only take a shoulder pad swap and possibly some additional bits and pieces from the grey knights sprues to tie them in nicely. (along with a few painted touchups of course)

And then there is the option of using the grey knight rules to run my thousand sons force, which would be a different way to run them on the table! Also I can see the GK rules being great for pre-heresy thousand sons armies. It would be much closer to their sorcerer background than the other rules I have seen. Then you also have the option of running imperial agents to represent cultists, religious fanatics, space pirates, mercenaries and rogue traders who have no qualms about who they work for.