the absurdity in owning a 458 win or 458 LOTT, here in the lower 48 states, would be related to shooting dozens of full power loads that cost $6-$12 each,and not having the rifle very useful for the more common game like deer or elk, once you decide that the effort to reload too a much more comfortable recoil level, is an option you might care too take, and after you find a very accurate load matching your rifle, and reduce the cost to well under 70 cents a shot (easily done) using cast bullets that can be every bit as accurate as the factory ammo,many people see the ownership of a big bore rifle differently, it puts owning and using a 458 win or 458 LOTT, rifle in a whole lot more user and wallet friendly role, in your list of rifles, you grab going to the range or out hunting. yes the rifles do tend to be a bit heavy , but two of my friends have used 458 win rifles with reduced cast bullet loads successfully on Elk and one guy prefers a mild load with a 355 grain cast bullet at about 1400 fps for hogs and deer here in Florida.
while I'd agree that few people would want to use full power factory ammo all that often,
the 458 win and 458 Lott can be hand loaded rather easily too be used at reduced power levels, making the rifle more pleasant to shoot.