Not a fan of the plastic sheath, and the handle inserts can be replaced. Giving this one serious consideration. I don't need it, but....
The 52100 is nicely heat-treated, and plenty tough. No reason not to get it. And, for those who say an integral handle with exposed metal can get too hot, or too cold, to handle, there's these things called gloves. I'm surprised you haven't heard of them.....