Tablet Leger Calibre or equivalent on NST

I have a Nook Tablet 8gb and HD+ and on each I have synced 25 Calibre Libraries on an sdcard specific to genre or author and I use Leger Calibre to Navigate through 10K ePubs with almost flawless results

Has anybody run Leger Calbre or any Calibre Library tool on a NST 1.2.1 ?

I basicaly need way to navigate Calibre ebooks Libraries other then the Nook Library app

I can live with the Nook reader app

I just can not decide if rooting is a worthwhile option on the NST.

TIA
Dave