Darrel,
I agree with your point and don't mean to imply that I'm looking for edge retention to the absolute exclusion of all other factors. I simply mean to say that of all the properties a knife steel possesses, edge retention is the one, that for my purposes, is the most important. Based on the way I use a knife of this type I can afford to trade some toughness for increased wear resistance. In fact, before learning of the forums, my daily carry for the past 10 or so years has been a little Boker with a tiny ceramic blade. It's never been super sharp and it's not much to look at, but for someone who didn't have a clue how to properly sharpen a knife, it served me well. And through all the hundreds of sliced boxes and other odd chores it performed, the blade never broke or even chipped for that matter.
Now that I know how to properly sharpen a knife, thanks in large part to the members of this forum, I'm ready for something new. 10V appears to have unparalleled edge retention capabilities (with the possible exception of 15V)combined with the toughness of D2 or M2. I say if you can have your cake and eat it too, why not? I was just looking for the right baker.
------------------
Semper Fi