Get motion controller position in real world

What is the best way to get the position of a tracked object (i.e controller) in real world space relative to the play space center? I am aware that I could get tracker use the Get Tracked Device Position And Orientation method from the steam vr function library but I wonder is there a more efficient way since the controllers are already tracked. Consider the vr demo project which has the vr hands, would there be a way to gain this location info by getting the hand relative location to the player pawn?

Also a question: What do you want to do with it?

It is based on a study for university. I am taking a snapshot of a persons position when a certain action occurs in game so that I can spot trends in behavior.