CRKT just came out with a production version of one of Brian Tighe's knives. Check it out here. I really like some of Tighe's designs...I may have to get one of these.
I've seen this blade myself as well. Very quick opening as opposed to other thumb openers. Just open it a little bit and a (leaf?) spring does the rest. Neat for those quick emergencies.
Check the penal code for your state. I've found that assissted opening blades are not legal in some areas. They do have a non-assissted opening model though.