So I have a unit with two melee weapons in the primary slots. I have no secondary weapons. I can't switch from the first weapon. I know it is there because I can see it in the spawn screen. Is there a way to make this work? I feel like I have seen it done before.

From my experience, you cant truly get two melee weapons on the primary slots. Its the way that the engine is or something like that. If you have one primary and a secondary with an emitter ordanence, you could get something similiar.

The only way I could get it working was to give the unit a non melee weapon as its first primary. Then I could switch between the other weapons.