It never occurred to me that the new Bookerly font wouldn't work with Calibre-made AZW3s. I thought Calibre-made AZW3s might miss out on improved word-spacing and hyphenation, but to not be able to select the Bookerly font?!
@Canuck_In_Japan: I would be very interested in hearing your findings on this when you get your PW3 (congrats!). And yes, welcome to the Darkside
. That's exactly how I felt when I went from Nook and Sony and epubs to Kindle. Dealing with azw3 took some getting used to, but I've settled in nicely and find myself quite happy here in the Dark