Aside from Psychic marines the Grey Knight codex had one large benefit which was the ability to field human units aside Astartes (before 6th edition) and after three weeks of work the first Spire Guard strike team is complete. In game it is a henchmen squad consisting of 4 warriors with Boltguns and 5 warriors with carapace armour (the riot shields) with 2 Boltguns and 3 Plasma guns.
I created the Plasma Carbine weapons using guard flamers and a plasma pistol which are easy items to come across instead of buying the actual Plasmaguns themselves. If I get the time before the tournament next month I'll also add the ceremonial swords on their backs like the last squad.
Another model that will be added to the squad soon will be my Zanatorian Weaponsmith representing the Jokaero to give the squad some interesting gameplay, which I’ll build after the 2nd squad is completed > [link]