I think they are crazy. I have shot the 460 S&W and the 500 S&W. I do like shooting .44 mag and .357 mag, but I am not man enough for those guns. I can shoot them, but it is not fun and my face feels like I got in a fight after only one cylinder.
BUT, I did put up a 3" group at 100 yards with open sites, and it is cool to see the walls of the shelter we have at my range shake. The newness wears off quick, and you are left with a teeth-rattling and expensive handgun. I would just keep it in the Marlin and call it good.