So, they aren't exactly the same, but pretty close...154CM and ATS34. Add those together right now, and they have 48 votes, even more than good old 1095.
So, the question is begged, Why aren't there more modern steels being used in slip joints?
I myself love the S30V found in my Native, the VG10 and SGPS found in my Falks, and would love to see more of these in use in traditional looking knives. Please, don't make me buy a custom...'cuz I will.