Now that you mention it... I did peel and chop a carrot the other day that turned the black finish kinda blue or green. Then the next day I batoned some post oak and it went away. I wonder if I should have eaten that carrot.
Oh, you're fine. The particulates left behind were in such a small quantity, it wouldn't have bothered you. I've cut up many a dinner with my coated BK5 and we're all still kicking.
GunKnifenut has the right idea on blade coatings, its a process of manufacture. If you strip your BK2, you will see tooling marks, made by the CNC machines as the they brought that blade to life. If the coating wasn't on it, it wouldn't look as good. Unless you like tool marks, in which case it would look awesome.
Also, like Clich is saying, modifying your knife, makes it belong to YOU. Your knife can be just like everyone elses, or it can be a work of art that is your creation, and it FEELS like it belongs to you. Pride in ownership.
Plus, there is a practical side to it, albeit an nominal one, that some say doesn't exist, which is ease of movement threw whatever media you are cutting. I say it works better.
As far as blade protectant, if you still have the coating on the blade, you have nothing to worry about as far as corrosion is concerned, you might want to put some oil on the edge, but even if it rusts, a quick sharpening will take care of it. I don't worry about it, others do. Its a personal choice that you have to make.
As far as oil is concerned, I use mineral oil, or more specifically, Ballistol. Best stuff in the world for knives and guns, IMO. Its non toxic, safe to ingest, and during WWII, the German Army used it as an antiseptic for small scrapes and cuts. Plus, it neutralized the acids in the oils on your hands, so, your own body won't corrode the metal.
If you do strip your BK2, with use, it will develop a patina over time. Basically, a protective "blue" rust shell. It does wear with use, but a real patina made over time, is quite a beautiful thing. You can force one, by creating a controlled rust using an acidic medium, say, mustard, ketchup, hot sauce, meat, and so on. It doesn't take long to do, but it doesn't last as long either. Some patina's can be made, and then "aged", so they are a little stronger.
Welcome to the Becker forum, and congrats on the blade, it will serve you well, and long.
Moose