A DLC blade coating getting scratched is hardly an issue, and is not something QC could ever notice.

It would not even be considered a warranty issue.
Coatings are like paint on a car, they can scar, scratch, and look bad over time. It's all purely cosmetic. Everyone knows that going in. There are a ton of knife buyers that stay away from coatings for that very reason. Others, have no problems with it.
Look, no manufacturer does their own coatings, everything is always farmed out. DLC is commonly known as the best available, yet it's not permanent. IMO to hold a factory, a particular knife, and their reputation in bad light based on the fact that your blade finish got scratched up is seriously questionable.
To then add that "maybe" the construction and performance could have issues based on that scratch...well I don't care how many knives you own, it comes of as newbieish. Sorry.
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Thomas,
No disrespect intended but you should re-read the comments I wrote. The speculation of additional problems was not related to my own experience regarding the Blur I had, but rather in response to the original poster's problem with the anodizing on his knife. If the frame on each side of the knife do not match and/or have different looking coatings I feel it is safe to assume that whoever was the QC person that passed that knife didn't exactly do his/her job correctly. Also, there is a greater possibility that something else may have slipped by as well if something like that was missed.
It's not to say that there absolutely will be additional problems but missing something like a different texture on each side would seem like it would be hard to miss.
As far as holding a manufacturer and their reputation in a bad light because the blade finish got scratched is in this case warranted. It was the first time I even used the knife and the finish came off very easily. It came off as the blade rubbed against the inside of the mouth of the PLASTIC container when I removed the seal.
I have since, as well as in the past, used other knives for the same job and have never had any issues with them. My Protech, MOD, Benchmade 913, Vex, and Microtech SOCOM all have the same style of tactical finish on the blade and I have never had a problem like this. They have all stood up to abuse equal to and far greater than what caused the finish to rub off of the Blur.
It's too bad really because I really liked the Blur until that happened. I was disappointed to say the least.
I think that if your going to produce a product that is intended to use as a tool then it shouldn't be expected to fail under such light use.