Update, works great w/ Sandisk card from Amazon:
(SanDisk Ultra 32 GB microSDHC Class 10 UHS-1 Memory Card 30MB/s with Adapter SDSDQUA-032G-U46A)
link:
http://www.amazon.com/gp/product/B00...ls_o02_s00_i00
Speed seems fine, and when i used Calibre to dump books and shelves to card, worked perfectly, the Glo picked up what I had sent to card and all were "shelved" correctly.