It looks like a useful way to browse instruments, search, tag. Especially if you have a a number of Kontakt libraries, and find the quickload limiting or navigating file structures time consuming.
It looks like a Kontakt equivalent of a sound library navigator/manager (soundminer, audiofinder, basehead), perhaps.
I do wonder though, can you drag-and-drop into Kontakt? And (perhaps most importantly) can you audition instruments? ProManager