Nice font. I've had varying luck with slab serifs in body text readability, though on average they're a much stronger choice than most standard serif options. I noticed that Minion and Sabon, two fonts I'm fond of for general use, don't display well at all on the reader. I can't afford to drop coin on new fonts at the moment, but I would really like to try out
FF Milo Serif to see how it plays. Anywho, I'm quite happy with Arno and Chaparral, and I have been playing with the OT ligatures in some of my custom pdfs with Warnock and Arno. Chaparral Pro seems to be much more readable to me than Caecilia or other similar faces, so I'm pretty happy with that for a slightly more contemporary typeset.
Nice to see other people are still playing around with fonts though.
It adds a dimension of toy personalization that satisfies beyond just displaying text.