Xbox one controller vibration

Now that the xbox one controller is going to be the default for oculus games, I thought I could use the 4 rumble motors (2 triggers, 2 handles) to add some complex feedback to the game I'm working on.

XInput works fine for the left and right handles, but there seems to delay of about 2 seconds, which means there's no point in using it. I've been looking around and it looks like there's currently no way for indie developers to access the two trigger motors.

Has anyone else got this working?
Thanks!