I bought one and have used it a fair amount. it cuts very, very well and holds an edge. But, the knife comes with a note saying Boker has to sharpen it (the price is reasonable but I don't remember the cost).
But, you can not use this as a solid utility knife. Any sharp blows or torque to the blade may shatter ceramic :^( I would not take it backpacking.
I think they are worth the price if you want a solid, light, always sharp knife.