Global Custom Capes

Rather than having custom capes available only to you, I'd like to ask if you could make custom capes global. This would mean that everyone would be able to see someone else's custom cape without having to install any mods. Something that you could do to achieve this is give the custom capes the same treatment as skins. Once the player equips it, everyone can see it. (If you do follow through with this idea, it'd be appreciated if you also made a corresponding tutorial about this (like custom entities, sounds, particles, etc.)