Awesome! Thanks a ton.
It looks like the paging is off. To get the Adafruit library pages in the right order I had to change the following line in ST7565.cpp from
const uint8_t pagemap[] = { 3, 2, 1, 0, 7, 6, 5, 4 }; // Adafruit original
to
const uint8_t pagemap[] = { 7, 6, 5, 4, 3, 2, 1, 0 }; // Adafruit changed
I poked around and I haven't found where I would define the page mapping.