Paintfx To Polygon At Rendertime

Hello. I was attending a fantastic talk by Eric Saindon about wetas work on King Kong.

He talked about converting paintfx strokes to polygons at render time. Which sounds great as I've tried convincing people about the benifits of rendering with polygons and not the paintfx renderer(it may be speedy but leaves alot to be desired for in terms of its look).

Maya didn't really deal very well with mass converting paintfxs or a scene with heavy polys. So I'm assuming(I should have asked) that the pfx where converted to polys but into a RIB? or similar.

Anybody used this technique before. Via mel or api. I'm really interested in trying this.

Cheers