[Autumn]

It seems that eviter will not proc for arrow based attacks if you are only holding a weapon in your main hand, it works for if there's a weapon in your sub-equip though.

EX:
Person A is equipped with galdric knuckleduster and in their sub-hand is a metalic magical gauntlet(a hand slot equip, not weapon) and is Ghost/Verglas
Person B Is using Aerial Razor

Person B shoots with Aerial razor, Person A will never proc eviter when they are facing Person B