I just picked up my 'first' 460 on Saturday.
I had resisted the X-Frame's for a long time, but finally decided to cave on a .460 (over the .500) because I already have other guns chambered in .45 Colt and .454 Casull... just keeping things easier/cheaper to reload and shoot.
I went with the 3.5" model for a few reasons. First, I'm not big on compensators on handguns; second, I'm not big on long barreled handguns; third, I definitely prefer the unfluted cylinder, and; fourth, I wanted the OD colored Tamers.
I spend a lot of time in the mountains, and while I would probably still carry my .454 Ruger Alaskan more often than this, the overall length of this gun is about the same as the several other 4" revolvers I own so as a hiking gun it would be ok in a good chest rig or something like a weight distributing pancake belt holster.
I'll admit, I was suffering a bit of buyers remorse after getting it home and running into mechanical issues (details in a separate thread)... but I discovered that they were 'just' due to junked up internals. After a good detail strip and cleaning, my buyers remorse has gone away.
Just a little size comparison with a Wiley Clapp 3" GP-100...