I posted a demo of the new Vincent SC library on YouTube. The demo is showing the Rollercoaster demonstration, which was also ported to OpenGL ES for the Coding Challenge back in 2005.
The take away should really be: It exists, it’s real, and it’s a high-quality implementation(*).
(*) Thanks to YouTube’s down sampling, that’s not necessarily obvious in the video.
PS: It’s missing the trees, because those are rendered using an alpha test function removed from OpenGL SC