Yea, Hunters are the only
SW who is able to carry 3 weapons!
Personally I think a marine equipped with boltgun should have it on the model, but thats just me, thinking a boltgun is a bit to large and bulky to hide in their P-armour pants or whatever. You could even paint them similar so you can use them as either troop you like, but most players would probably use their imagination to try to set them apart. All my
GH have helmets and bolters,
BC have hand weap/b-pis and bare heads, as an example. Just dont go crazy with the wolfclaws and stuff, and youll be alright.