i agree with the previous poster, even for vfx you will end up wasting time troubleshooting and missing deadlines on any serious project while youbcan render the scene in vray or arnold or even cycles with infinitely superior results.
edit: i would like to add that it really ****** me off to have countless and endless threads and posts talk about a very niche extremely exprerimental feature like raytracing when in fact there are a hundred other far more important subject matters still behind in the engine that matters for every day production and that the devs could use the attention pointed at by the vast community. Instead everywhere i look we get ten raytracing threads for one valid question.
With no disrespect sometimes i feel like people act like little children who forget why they were crying about trying to accomplish a task when daddy distracts them with a big candy bar! I remember a similar thing happened when epic introduced editing in vr inside the viewport supposedly the future of game dev thats right next is wiring your brain and inserting yourself into the epic matrix.
edit2: can i suggest to epic to create a section in the forums just for raytracing please! Im tired of seeing legit posts end up at the bottom of the page in a day becuae they are choked by ten raytrace related posts.