Spyderco's version of the Karambit is a solid winner. This knife is thin, easy to carry, easy to deploy and all around quality. The blade is a solid VG10 for razor sharpness. The G10 scales feel good and the length of the handle is perfect for most hands. My issue with karambits has always been that they are too small. The Emerson Wave feature makes this knife deploy quickly. This thing is not gimmicky...it is a solid tool.
If you carry a Karambit or wanted to, then this is one to try.