CTS-XHP is a funny thing to grind sand sharpen as it feels "soft" for what its been hardened too (i have had a few blades tested after thinking that i messede up[ the HT i have found this on a few other steels i have ground)
the lack of extra alloys in XHP makes the edge hold up a bit longer then the CPM154 but the alloy in CPM154 keeps the 95% edge in the game a bit longer (kind of liek a wash when you compare them)
both steels are PM grades and after learning a bit have found that there are even different "grades' of PM steel dependign how small the "filters" are

if given the choice i willl be makign more CTS-XHP blades hands down but i have to make sure i can get the steel as it has been a bit tricky at times to order in