Update: I received the cable-less LOD from eBay seller ecbuyonline2008. This may be standard with LODs (I wasn't expecting it): it disables the Fuze volume, so all volume control must be done at the amp. The volume controls on the Fiio E5 are not that user friendly (a + and - rocker), but I can make it work.
As far a SQ, the sound is a bit clearer and crisper compared to the Fuze headphone out, and due the very loud LO volume, I turn down the amp volume way down, probably saving some battery life there.
Anyway, have upgraded my Fuze (v.2) to Rockbox and I really like it, but RB does not work with the LO yet. I will give the RB developers a while to figure out the LO settings, or I will probably sell this LOD.