Using GPUOpen on UE4?

Well, wandering in the forums I stumbled upon this particular topic:

And that got me thinking: Did anybody tried to use this on their engine? How does it works? How do I do it?
I’m a AMD user, and seeming that AMD is going to be a serious competitor over the cpu space at least until 2022… Why don’t optimize my game to AMD software as well? (Remember that the engine already includes nVidia GameWorks)