No, but it's the same idea, done online rather than from CDs or DVDs. Let's you tailor-make your distro. Gentoo's something like that, isn't it? A base install from CD then choose the rest to download and install, like Debian netinstall?
I'll have another look at the rPath site.
It's a bit gimmicky that site - all that "cooking", etc, stuff. Not at all clear about what it involves.