I cringe every time I see a TV celebrity chef brought up on Western chef knives trying to do justice to a Santoku. Personally though there are other knife styles I prefer
I used to carry a Spyderco Enduro but found it too big for my "man purse"
I then discovered the CRKT Eros - a sweet Ken Onion design that's just about perfect for basic EDC tasks and the occasional mall eatery steak.
Pierced Ti handle; frame lock; 3" 440 (Accuto) blade; IKBS pivot; Flipper...
I have a couple (one vintage - the other is on a Huon Pine handle)
I have a couple - one's a vintage and the other (shown) is on a rather nice Huon Pine handle. Never used either of them as I don't see the need for a slice-guide - and anyway I prefer to use a gyuto for slicing bread - no need...
Have you guys considered the Boye Cobalt knives - these things are designed for saltwater and tough cordage
http://boyeknives.com/index.cfm?CFID=3859634&CFTOKEN=b35706ed191124bf-E83873BE-D0E0-58B3-2710CF6F09958665&jsessionid=457B95623D63498D4E5FDE62BEB61DFC.cfusion
Bit hard to tell from your pics - (my chinese is hopeless as well) whether you have a chopper or slicer but it definitely looks to be one of the larger CCK's - my guess is the 1503
http://www.chanchikee.com/ChineseKnives.html
I believe the use of the santoku (steel and ceramic) by celeb-chefs has more to do with their 'exotic' shape/material than any performance benefit - compliments of the prop departments.
It's pretty obvious to me that while GR uses them he is also uncomfortable with them - and as for Nigella...
If you run it so that the edge is in line with the belt it will fix up that wavy edge - I have used this technique on several knives which had been 'over-steeled' to the stage that they were starting to look like kukris. Just make sure the blade doesn't heat up
You do realise that Muriatic Acid is actually Hydrochloric Acid (HCl). You can also etch with Ferric Chloride - the same stuff as was used for etching printed circuit boards - this is not as aggressive as HCl