If you ever feel like too much of a perfectionist, remember FromSoftware made the 2nd Ringed Knight Greatsword slightly different (different model, textures and everything), when 2 identical ones would have been
Ringed City New Weapons - Locations & Stats | Dark Souls 3
Steam Community :: Guide :: How to kill those Ringed Knight Paired Greatswords users
Dark Souls 3 - How to Quickly Take Down People with the Ringed Knight Paired Ultra Greatswords