Here's what the guys at The Firearm Blog had to say about the Zero Tolerance 0630 they recently tested:
"The blade design is a full bellied up swept drop point with a small false edge along the back. A really attractive blade altogether and should prove to be a useable design overall.
The blade also features a thumb disk for one handed opening, as well as the wave shaped opener inspired by Emerson knives. The Wave opener is addictive. It really is a joy snapping this thing out of your pocket. I was uneasy about some of the pocket opening features initially. I believe this design however seems to have it right. It has a definite release point, and does not get hung or caught unexpectedly. It took no time at all to get used to the action. I did notice it did not seem to work as well with my military pants pockets that are designed to allow a hand in and out easily, and required some more deliberate movement compared to my jeans or 5.11s. Consider your wardrobe if you want to get a wave opening knife but it comes highly recommended by this writer."
You can read the whole article at the link below.Read Article