Ok here is version 1 of the VPR PBR nodal shader. There are a couple things to know about this shader but should be strait forward to set it up.
1) This only works with VPR.
2) Turn off GI, All Raytracing and Adaptive Sampling.
3) Gamma Input is for two settings. Use 0.4545 for CS set to Linear and 1.0 for CS set to sRGB. Make sure either way your normal map is set to Linear.
So to use the shader. Launch Layout. Select the CS you want to work in. Do backet 2 above. Load a HDR for the background and set it up in the backdrop>add environment. Load your model and the textures. Leave all textures at default except for the normal map which you should set to linear. Next go to the surface and into the node editor. Right click and import the node. Once loaded place fill in your textures in each of the image inputs and assign the UV's. Next hook up the Input>Normal to the Info Normal of the PBR Shader. Hook the normal map output to the Surface>Normal. Next hook the PBR Shader Color to the Surface>Diffuse Shading. (see attached images for hooks) Turn off Draft mode for VPR then turn it on and enjoy.
Reason this only works with VPR is due to the way VPR uses nodes. F9 needs more information to render correctly. If you want you can add sliders to the viewport for the inputs. Just click the 'E' button for the inputs. Add a null, add the Sliders plugin under Add Custom Object. Open the plugin and add the channels then slide way. The names of the inputs have the value ranges you will want to use.
For quick models to use with this try downloading from here.
http://quixel.se/usermanual/quixelsuite/doku.php?id=ddo_samples
Of course this should be able to display any model that has been setup for PBR textures. Would like to see images of other files. Again this is just version one. I'll be updating as I keep experimenting. I have both metalness and substance methods going in this one. Want to get it to where only 3 or 4 maps are needed and can split the methods. Oh and this is all Lightwave native nodes. So should work with everyones installed version.
Have fun.
-M