I got an email out of the blue with a link to a new version of this library.
http://www.replikasound.co.uk/rsgl01_acoustic_gtr_classical.html I have several of their products I think I got them in a fire sale at some point, they are not at all bad.
The strums are reasonably convincing but there are limitations on the availability of some chords. The manual is one of the best I have seen for low cost Kontakt library and explains what is available.
For solo work the keyswitches select a number of articulations.
There are some free demo version on the website.