See my comments on frame locks and auto blades under the (gag, barf) "tactical" knives discussion. if the spur / guard on the top edge of the blade acts as a "open on withdraw" hook (like the Cold Steel Ti-Lite), this blade can open faster and more safely than an auto.
The glass breaker is a useless feature that can actually injure the user's hand, depending on the grip / thrust of the knife. PASS