I wonder if this is compatible with the 5 (and visa versa... sorta... if the 5 case is compatible with the 5n).
I have a 5 with the 5 version of this case and though initially I was disappointed with the new style of attachment (rather than the old school screw-into-the-tripod-mount type of connection for these types of cases), the looser thread-less peg with loops securing the case to the straps method has grown on me over the months. It has proven to be fairly secure in practice (never had any kind of mishap over the course of the better part of a year), and provides very quick access to the battery and memory stick compartments (I just unclip one side and flip the case up to gain access). As for fit, I don't recall how it was when I first put it on, but looking at it now, it's pretty much molded itself into a form fitting shape around my camera... so no real issues there.
Anyway, the point of my initial musing was... even though the 5 case has ended up growing on me (I am now quite fond of it, and actually kinda sad that they don't have a lens cover portion for the 18-200 lens), I am still curious about how a tripod mount case would feel on the 5.
Would be pretty great, if they kept the bodies close enough that the cases were pretty much compatible with each other. Would give users a greater degree of choice in the matter.