In case anybody cares, I emailed customer service at Sierra Snowboard, and they also confirmed that the Roxy Ally has a full wrap edge. I'm assuming their other top-of-the-line boards would too, like the more expensive Envi MTX, Eminence MTX, and Eminence BTX.
16 NS West . 15 NS Snowtrooper Brother in Arms Edition . 13 Salomon Pow Snake
16 Rome Katana . 15 Now Drive . 14 Burton Genesis
14 Flow Hylite