Never owned it but wanted one. The 2 or 3 times I fired one I really liked shooting it. The whole "hard to find ammo for it in out of the way places" may be true but irrelevant for most of us that a) don't go to those places very often and b) take enough ammo to suffice. So as long as you plan ahead, this won't be an issue. Today, ammo is expensive anyway, so why not?
You can, if you can find them, go from 70-120 grain loads so it is a versatile round. I would probably trust this round over a .270 at 400+ yards to take down deer, though both ROUNDS will hit it (if you can).
I just don't hunt enough to justify any rifle other than an AR or I'd probably get one of these.