“Which version of the binding is this?
From Blistergear Review: The Vipec was originally released in the 13/14 season. It was revised in 14/15 with several features to prevent the adjustable toe pins from loosening (adding locking wire clips and relocation of the adjustable toe pin to the other side), to aid step-out (revised toe spring), and to aid step-in (added plastic toe guides). A mid-season revision also featured additional plastic covering in the heel piece to prevent icing.
Bought mine from Black Diamond to be sure I had the most updated version. Their customer service (chat/email) will help you as well with really detailed questions. One thing to note that I've found, however, is the crampon sizing. If you want crampons, and dont' want to search something custom made, the fritschi vipec crampons are only really available right now in two sizes if that sways you for some other tech binding. Also, according to the OR SLC show updates, they are coming out with a newer version this fall if your current setup gets you by until then.