I do not see MagnaCut as a contender to be as durable as 3V for zero scandi grind. The point of requesting such a knife in 3V is the possibility it gives to use the knife with little less care (i.e. being little more flexible without worrying about edge damage).
Of course, hardness and edge roll come into play too. I would consider 3V for 60.5-61. It should be tough enough not to roll easily. If not then I would take CruWear at 61-62. If that is still not hard enough, meaning edge rolls before it chips. Then yes, MagnaCut will have a shot