Immediately bought the app, damn this is incredible that they got this working! Like said the only disadvantage over the workaround (that doesnt work anymore on OS2.6) is that you see some slight green tinting around the model. Nowhere as bad as the work around via SteamVR, but still, it's noticeable. But other than that this is pretty damn good.
Big props @bigboppa for the tip! I'll most likely will still get the Samsung Moohan headset, if only it were for the AV1 support, but still, I love supporting developers who invent awesome things like this, they succeeded where all the competition failed or didnt care.