Here is my experience using a cheap VR headset and the Litchi app for my P3A.
First flight using Litchi 2.0.2 and a pair of 3D RIEM II goggles. Normally, my tablet screen is washed out by the bright daytime light. Most of the time I can easily make out what I want to frame and shoot, but smaller details are easily missed. With the 3D RIEM II goggles and my Samsung S4, I could easily catch the flight of the crows, all the powerlines and the fishermen at the pond. All of these momnets would have been missed using the un-shaded tablet.