I also got the impression that "Shadowland" had little support from Adobe management, until Apple introduced Aperture. At that time Adobe rushed to release Lightroom public Beta which still used "Shadowland" for variable names in all XMP-sidecar files ;-)
I'm very glad that Shadowland was allowed to leave Adobe Labs.
I did use Pixmantec RawShooter Premium, BTW, and Adobe was kind enough to give away the first version of Lightroom to RSP owners. I don't think that the Pixmantech features were in either the public beta or in the first release of Lightroom.