I also prefer a thinner blade stock for general use and the heavier blade seems to be necessary for most flippers. The ZT that I really like is the 0770CF. I carry it from time to time, but lately I have been carrying a Steel Will Mini Cutjack and like it a lot.
I have a 0770CF/M390 that is a joy to operate. That said, I've never carried it, and am not likely to. It is just a hair too short for me to hold properly. I have had a goodly number of the 550/560 series, and although they are great knives, they are generally too heavy for my comfort.
My weight limit is 5 oz which allows a large Sebbie or Zaan, and I'm not happier with heavier than that, although
MANY others are.
I do have a Steel Will Cutjack in D2 and it seems nice, but it hasn't made it out of my knife-box. Even though I like the initial feel and balance of the Italian-made knife, I fear that I'm a real snob. It just hasn't aroused enough interest that I want to carry it. Don't get me wrong...I've owned probably ten RAT 1's and 2's over the last few yrs, but tend to gift them rather than carry them.
As you mentioned, I'd love to see more general availability of thinner blade stock..
3/32" or so, and am
VERY tired of the almost-universal use of 1/8"...which has no interest for my casual use. And,
give me a high hollow grind EVERY time and I'm happy.
To a large extent, I've "temporarily" settled on a cross-draw leather sheath with the Bradford Guardian 3 in M390. I've used one continuously for close to a year now, and it's a great knife...even if the 0.140" blade-thickness won't come close to slicing an apple.
I do have a special blade coming one of these days...a thinner, high hollow-ground S!K GSO 2.7. It's a shame, though, that the darned thing will cost me in excess of $400, not counting the custom leather sheath, when the company could have produced what I wanted for half of that.
I certainly hope that I'm content with that blade, as I will NEVER be able to retrieve my initial investment back from that custom. Ah well, one must do what one must do...dammit!