Yeah, two swords + two shotguns on a small map with five gravity lifts was great fun.
Wait, no, it wasn't.
Don't get me wrong i hate countdown but i don't recall two swords and two shotguns...just one of each.
Normally, weapon spawns are set to 'max: 1'. This means that the game waits for a weapon to disappear before spawning another one. For some reason known only to Bungie, both the shotgun and the sword were set to 'max: 2' (at least at vanilla), so two of them could exist.