Should they be tagged only when they are actually doing something in the picture or also when a character is wearing clothes that are known to be living, even if they are currently inert? In the majority of living_clothes matoi_ryuuko pictures senketsu is merely present without doing anything, and anyone not familiar with the show won't know what the living_clothes tag is supposed to refer to. Besides, it dilutes the tag (someone searching for living clothes will probably not be satisfied with the mere knowledge that they are living).
Updated by Dariush