What strategies are you using for backup cameras? Duplicate cameras is the usual strategy, but expensive for MF.
I'm shooting an H3D 39 - I'll be upgrading to a H4D 60 once it is available. On the recent GetDPI workshop it was suggested that the main item to backup is the camera body - that the back is sufficiently reliable that it's ok to travel without a backup. I can buy a backup body (say an H2) quite cheaply, so this has some appeal, but is it wishful thinking?
One could always backup with a different system (Canon, Nikon or Leica for example) but than means redundant lenses, batteries, chargers, etc. and it would be nice to save weight.