Found this article about how deadly waved Karambits are to police. He specifically mentions Emersons and cheap clones, picturing a well used clone with a six sided hole.
"This knife is quicker than lightning, much faster to deploy than any spring-loaded auto knife because it opens upon drawing."
http://www.lawofficer.com/news-and-articles/articles/lom/0101/knife_alert.html
He cautions against knives with a hole grip clipped to a pocket being particularly deadly. The author doesn't mention any other waved knives.
"This knife is quicker than lightning, much faster to deploy than any spring-loaded auto knife because it opens upon drawing."
http://www.lawofficer.com/news-and-articles/articles/lom/0101/knife_alert.html
He cautions against knives with a hole grip clipped to a pocket being particularly deadly. The author doesn't mention any other waved knives.