The BladeForums.com 2024 Traditional Knife is ready to order! See this thread for details:
https://www.bladeforums.com/threads/bladeforums-2024-traditional-knife.2003187/
Price is $300 $250 ea (shipped within CONUS). If you live outside the US, I will contact you after your order for extra shipping charges.
Order here: https://www.bladeforums.com/help/2024-traditional/ - Order as many as you like, we have plenty.
I too, thought I saw a line of Case knives with one of the two steels in quetion. All patterns with the steel were Barnboard scales or something. I can't for the life of me find them now!
However, I was curious about (& maybe the OP is too?) the 154CM models that I've seen. They're not collaborations, but certain Case models in red bone, IIRC. I also was/am curious as to how they are.
I have the barlow, but have pulled the bone scales off and replaced them with buffalo horn. The blades have much better lines than most other Case knives, since they're as-ground rather than polished. The blades are very hard to sharpen, but hold an edge exceptionally well.