My dad has one in .50 AE. I'm not really a huge fan. It's fun every once in a while, but then it goes right back in its box. I think some cartridges were just made for revolvers, it just requires to much bulk in an autoloader.
It has been accurate, but expensive to feed, often finicky about its ammo and cleanliness needs, and difficult to comfortably wield.
But like they said, it'll win respect from the Matrix folks!
Are you looking solely for a range plinker? A pistol for self-defense needs at all? To help with marksmanship abilities? I only ask because aside from cool factor and 'the big boom', I think there are better/more economical choices. (Not that one needs a better reason than a big boom and a cool look to buy a pistol!)
Best of luck, hope you enjoy it much if you get your hands on it!