I have to agree with the guy who said he didn't want to pay a premium to get bone inserts that he has to be careful with. Now, for me its not the bone (I after all really like natural materials in a knife handle), its the having to be careful with it part. I carry on my person 2 Spydercos at all times. One is my Delica (which I can't thank JoeShmoe2000 enough for) that I got this summer, and the other is my Native. Now, what do these two knives have in common? They're both SS. I like SS for knives that I'll carry all the time because I don't really care if they get "character marks."
Some may disagree with me, but I just can't carry a knife that I'm going to care if it gets damaged. Now, the exceptions are my Gene Ingram knives, and will be my Don Morrow Trapper; but for the most part I don't want my knives damaged. I always want Spyderco to come out with premium steels in their SS models. I'm not even sure I'm going to get one of the SS Delicas because I know I wouldn't carry it. The SS Cricket was great because they were coming out with it in VG10, I'm hoping that the same will be for the Kiwi (and that they'll actually produce the thing), because the blade shape is very much more usable on the Kiwi than the Cricket for general tasks. Now, even for the SS Kiwi I'd get a CRK Umfaan pouch, but that's just because the thing will be in the bottom of my pocket where the lint bunnies reign supreme!