"Kevin John" is nothing but a name the factories are putting on the counterfeit knives that they remove the illegal branding from. These are the same exact knives that they sell with the illegal branding, but with the branding removed and "Kevin John" text added. There is no "Kevin John". I've seen the same trend in the counterfeit watch world. They want to appeal to people who wouldn't buy counterfeits with fake brand names, but would buy high quality replicas with different branding.
That particular manufacturer does not produce knives with illegal branding... which is a good thing, because his knives are the only ones that come near the quality of the knives they are intended to be.
I spoke with a Chinese friend of mine who is into knives about the subject. According to him, the "Kevin John" producer doesn't produce knives intended to be shipped to the US. It is almost known as a name of prestige over there. There are knife collectors in China/Taiwan/Hong Kong as well, but unfortunately for them, it is very difficult to get knives such as Chris Reeve and Hinderers over there. Not only do very few get shipped over there, thus inflating the price, but people get paid quite a bit less. Comparatively, owning a Sebenza in China would be like owning a $3000 knife over here. There's just such a small market for that over there, but there is a market for knives produced and marked up at the cost of their labor... hence the Kevin John knives. Functionally and in form, they accomplish almost the same thing at a price people over there can afford. Personally, I don't see much wrong with that, outside of stealing intellectual property (which I do believe is wrong)... but I don't expect anyone to control that in China. I do wish they would change the designs slightly to something more their own, though (they do produce some original designs, which is a step in the right direction).
Unfortunately, some leak over into the US and other countries. They are however not considered counterfeit, as they are not intended to be sold as the original product, so there is really nothing that can be done about them being posted on the bay and such. They aren't stealing business from CRK, Strider, or Hinderer. People who buy them know they are buying a "Kevin John" knife, not a Sebenza. This also means they aren't tarnishing the name of the companies involved, as people aren't getting crappy products. Thus, the Kevin John knives are far from public enemy #1. While they do produce the best clones, they at least have the respect to use their own name. If you want to feel a little better about it, it is opening up the fantastic designs to people in another country who basically have zero chance of affording it otherwise. My point is, at least they aren't lying to anybody about what they are... and people who buy a Kevin John knife won't be any less likely to buy a CRK than they were before, so it really isn't hurting them.
There are however companies whose sole purpose IS to produce counterfeit products branded with others' names, which I DO believe is a problem. That causes people to get ripped off and unfairly tarnishes names. Someone who buys one of those will be out money, and companies like CRK will technically lose money, as that customer intended to buy one of their knives. Also, in the case that the customer does not know they have a counterfeit, they will be using an inferior product, which tarnishes the name of the company.