Just got this very cheap knock-off on AliExpress. Feels quite sturdy, gonna see how it performs.
I also bought a Gerber Zip Bladr replica.The blade was dull, so had to sharpen it up. Also, the lock failed sometimes, I had to file off the base of the blade a bit. During the process I noticed how a hard type of steel it was, I expeced something of much worse quality.
For now I'm happy with both. And a Piranha knock-off is on the way.