Preview Shaders in Maya

Hi.

I was reading in the vast World Wide Web about how some people would create "preview shaders" for their 3D apps. These shaders had the same attributes as the shaders in the 3D engine they were using.

In essense, they were able to give artists the ability to see what their scenes would look like "in game" from their 3D application.

I was wondering if anyone here has tried something like that with Unity and Maya. If so, how did it turn out?