I would really like some tips/documentation on the hair shader. I have watched the Paragon Video, but they only touch on the general principles. Some tips/screenshots to know how to implement the shader with the material. I am creating a character for a contest that ends april 11. This character has hair fur (also skin and cloth), that would benefit immensely from the new shaders/materials. I am going to try to implement the high detailing techniques used in the paragon characters. Please help 
UE4 is awesome
Hi there I was also looking for the same information but here’s something that I made for one of my packs for the marketplace. Its still not what I was going for, I will work on it and see where it goes.For Stitches I used 3rd UV Channel and high roughness values for the surface.
here is a link for more screens. I’ll post a screen shot of simplified material just let me know: Crazy Insane Pack Series - Marketplace - Unreal Engine Forums
For skin you could use multiple maps for microdetail like pores and so on and use the skin presets. You could also create subsurface texture in a painting application to get more realistic skin effect.
As for hair I think you could just use the old technique of cards and make a specular map and low roughness values and then set the hair preset. I will play around that for a bit and see what results I get.
Hope this helps, and best of luck for that competition.