Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - General How to Get Divine Ascension Outside of Steam?

I own Divinity: Original Sin 2 - Definitive Edition on the Nintendo Switch. I'm really interested in the art and lore books and other stuff that comes in the Divine Ascension upgrade on Steam. Is there any way to buy that stuff separately without having to buy the game again on Steam?