Pervasive Displays EPaper Boosterpack

I wasn't aware of these epaper BoosterPacks by Pervasive Displays. Did anyone already play with these?

http://www.pervasivedisplays.com/kits/ext_kit

Seems to be identical with Adafruit's offering, at least as seen from the top

http://www.adafruit.com/category/63_150

Also available at Digikey, but Adafruit is approx. $5 cheaper.

PS: Not listed on TI's "official" BoosterPack list yet, someone nudging the right people please