Andrew Rothman wrote:
Someone refresh my memory: when was the last time that an open carrying permit holder was assaulted by a criminal?
Arguably, in the Isolated Incident that jac714 brought up.
ETA: more seriously -- it clearly happens rarely, if at all. That doesn't mean that it's not a real, low-probability risk. Whether it's more than compensated for by the visibility of the gun scaring off criminals in the first place is, I think, a relevant and interesting question.