i had a 458 mag that i carried for a short time.
very well made, rock solid lock up. superb fit/finish, and a great looking knife.
what i didn't like:
-too much belly, and the grind toward the tip was obtuse. not great for utility purposes.
-thumb stud was very large. great for opening, but it would hang up on the seam of my pocket during draw.
-tip up. suppose i could have had it retapped, but there wasn't really a good place for mounting.
-recurve. not the easiest to sharpen.
ive seen a few since that i like, and at some point im sure ill own another, either folder or fixed.