Is it possible to use a SSE boss texture in sse rather than boss mode only?

[MonkUnit]

I was wondering if there was a way to use a texture for a boss, IE: Gutsman Galleom, in SSE. I have not used any boss textures yet because most if not all of the textures on Brawl Vault for bosses say that they can be used for Boss Battle mode only. Is it possible to use a boss texture in SSE at all?