You know, this pair reminds me of the Shivering Isles from TES Oblivion. since one lot of the guards (For the house of Mania, I think it was) had all gold shiny armour, and their bit of the place they guarded was all bright and prosperous, and then there was the other lot of guards (from the house of Dementia) who wore dark armour, and their part of the place they guarded was dark and ominous and stuff. Equrestria IS the Shivering Isles! No wonder everypony is at least slightly crazy.