Can you even buy this without a Steam account though? It’s the Steam Controller, sold through Steam, designed to work on Steam. A third party driver to convert it to Xinput will probably drop within a week of its ship date (just like it did for the first Steam Controller), but if you’re against having a Steam account I’d wonder why you want a Steam Controller in the first place. There’s plenty of non-Steam controllers after all.
Can you even buy this without a Steam account though? It’s the Steam Controller, sold through Steam, designed to work on Steam. A third party driver to convert it to Xinput will probably drop within a week of its ship date (just like it did for the first Steam Controller), but if you’re against having a Steam account I’d wonder why you want a Steam Controller in the first place. There’s plenty of non-Steam controllers after all.