Is the Valve Index supported the same as the Vive?

Hi,

Im thinking about buying a VR to develop and work in Unreal but in the documentation it said for the Unreal Engine VR Mode it only supports oculus and the vive.
So does anyone know if the Index is supported the same as the vive and the documentation isnt updated or if the vive is generell more supported and works better with unreal?

Greetings

Sven