So I think I've found the font source:
http://android.git.kernel.org/?p=pla.../fonts;hb=HEAD
But when I plug in my Original Kobo with 1.8 firmware, there is no logical place to find .ttf fonts or Liberation Serif ... or any fonts. I've looked in every directory using Windows 7 Explorer.
If this is as "easy" as swapping out Kobo's base font with this Droid one, I'm all over this customization ... but I'm asking for a little more hand holding. Please and thank you.