I lurked, then posted and got great advice, and lurked once more.
Mrs McPop got me a Masamoto HC Gyuto for my birthday (God bless that woman!).
First time I tried it was on pickles, tomatoes, cheese and pepperoni. Even though I was expecting it, I was amazed at the instant oxidization. I thought this could be fun so I polished it back and made some patterns using herbs from the garden and vinegar.
On the first side is flat parsley (sorry about photo quality, it is night and I using a phone camera):
And the obverse side is sage:
And after soaking in a vinegar dilution (10%) for about 30 minutes, the end result (parsley side isn't a good photo, unfortunately):
Nice and subtle...and surely to be destroyed with tomorrow night's dinner. :)