Reason to be server-side mod (min 30 words): I believe that if a faction has shown the time and dedication required to receive official status, it'd be nice for them to also have the skins they often use as official skins on the server instead of being restricted to using mods.
I support this as long as the skins were properly vetted and staff took the time to ensure the server want overloading people's downloads with a surplus of unnecessary skins.