I'm slowly working through the Fate series characters to either adjust or create costume chartags for them, and I absolutely want to make sure of something before I begin working on Gilgamesh. In Fate/Stay Night he is depicted wearing biker-styled casual clothes (post #2647504), so it'd make sense to treat them as part of his sets of 'default' attire aside from his armor. In Fate/Extella however, this outfit is given the name Immoral Biker Jacket and made into DLC for that game. The same applies to Jeanne d'Arc's Girl From Orleans.
Yes, I know I made Astolfo (Memories at Trifas) (Fate) and Mordred (Memories at Trifas) (Fate), so I might be doubling back on myself with this question. I made this tags due to them being alternate character skins in FGO, so they're more well-known. I'm just not 100% certain about how much I should go about creating costume chartags for designs that were released as DLC in the Extella games. I only want to know because I've already gone through Jeanne d'Arc and will work through Gilgamesh soon, and I don't want to sift through all of these posts and make these tags if they're ultimately not necessary.
I guess what I should be asking is, what defines a character's "default" attire, and should it get the chartag treatment despite being a "default"?