I love 01 as well. I do explain the patina process to my customers and I furnish a knife care guide with each knife explaining the characteristics of high carbon steel. But you know how it goes...........selected amnesia randomly pops up sometime.

Here is the verbiage I use. I would love feedback or suggestions on the wording.
**Thank you for buying one of my custom handmade knives! ___________________________________
Your custom knife is made of high carbon steel and the following instructions will assist in keeping it looking great. The wood on you knife is ____________________________________________.
Your knife will begin to develop a patina over time which is normal and the nature of high carbon steel. Cutting acidic foods such as lemon and onion will accelerate the patina process.
High carbon steel will rust if you do not take care of it. To prevent rust, keep your knife clean and dry after use and apply a light coating of firearm oil or vegetable oil. As an alternative you may wax your knife; Renaissance® wax is a good choice and can also be used to care for your leather sheath.
If you do get rust spots on the blade use a very fine 3M abrasive pad to lightly remove the surface rust. More severe rust can be removed using wet and dry sand paper. I recommend 400 grit wet/dry sand paper with a oil medium and after cleaning applying a fine coat of oil or wax. Do not clean in dish washer.
For very long term storage, store your knife outside it's sheath. The chemicals used in tanning of leather sometimes react with moisture in the air, leading to rust and corrosion. **