What a custom skin in LoL actually means
The important point is that RIFTSKIN does not ship preloaded skins. The app is a workflow layer for compatible custom content you import yourself.
- A custom skin is not an official Riot skin sold in the game client.
- You need compatible files before the workflow starts.
- The replacement is visual and local to your own setup.
- For the replacement to display correctly, you keep the champion's base skin in the lobby.