(2) I think neither liberator nor kindlepdfviewer (which does other formats despite the name) have yet an official released version with KT support but AFAIK they could soon have.
In the meantime, my
HackedUpReader works fine, too (based as kpv on the CoolReader engine). The thread on mobileread is here:
https://www.mobileread.com/forums/sho...d.php?t=170436