HTC Vive rumble using XR in Unity 2017.2

I’ve moved my VR application’s code to the new XR namespace, so now I’not using any plugin with HTC Vive. Everything is ok, I’ve the view, I’ve mapped all the inputs (buttons and joysticks), but I can’t find any reference to rumble, haptic feedback, etc. ¿Is there any Unity API to handle this in 2017.2?

Unfortunately, not at the moment. For now, you’ll need to hit the Open VR SDK for haptic feedback.

Thanks for the answer!

So I may add a library for every device (Vive, Oculus). For now Unity’s handling these devices internally, ¿is there any way to get a native pointer to OpenVR device or any other?
I’m not sure if it’s possible to initialize (for example) OpenVR again (Unity is already doing it) to handle only the haptic feedback or that will produce any inconvenient, for example problems with different library versions, multiple instances using the same device…
¿What’s the recommended way to do this now? ¿Is planned to add this feature in future versions?