I bought my ZK01 on Amazon for fast delivery. It arrived yesterday (USA). I was very pleased with the packaging and the contents. The knife is very well put together, with good fit and finish.
The action is very smooth and the blade drops shut fairly easily, so I have to be careful not to let the blade drop onto my finger when closing it. I can put some light pressure on the front flipper as the blade closes to keep it from closing on my finger. The front flipper works great, unlike some other front flipper knives I've tried.
And the blade edge is very sharp. I wish I could find out what kind of steel the ZDP core is sandwiched between, so I don't know how much that part will scratch over time. I was happy that it included a hardness test certificate - HV 898 is about RC 66, which is very hard.
Lastly, I have not used the sheath yet, but it's a nice addition and I was very happy that it smells just like a USA made cowboy boot and doesn't stink like some chinese leather watch straps I once bought off etsy.
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