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Especially as the knives keep the edge quite well.
Never heard that before, they are popular because they are dirt cheap. I don't use them
anymore I find them too wobbly side to side.The kiwi knives use stainless steel, and the Rockwell hardness should be around 50 to 51. The edge gets dull after a few minutes of use. However, with the very thin blade, most people would not notice the edge degradation.
https://www.chefpanko.com/why-i-like-the-kiwi-knife-from-thailand/
Kiwi knives are made of cheese and need sharpening after a few cuts so you should have plenty of practice.