I don't know about the other stuff, but I can certainly attest to the corrosiveness of at least my finger prints. I happened to be in a knife store one day, contemplating a purchase. I started out looking at a CS Trailmaster bowie, and as a normal practice held the knife by the blade and looked lengthwise down the edge to see if it was rolled, etc. I wanted to compare it to something else, so I set the knife down on the counter and asked the sales guy to show me a SOG Tigershark I think. Anyway the guy didn't wipe down the Trailmaster when I set it down and after about 5 minutes, I could see the beginnings of my fingerprint being etched into the blade! Fortunately, I was able to rub most of it out with my shirt, and the clerk had a polishing cloth to take the rest out. So - I second Mr. Gollick's thoughts.