There is a whole bunch of folks who think that carrying any pistol with the trigger exposed is a real bad idea.
I carry for protection, not to please anyone.
Besides anyone that has ever shot a PF-9 will tell you that the probability of accidental discharge are nil. It's a double action with the longest trigger pull that I know of. You pull and pull and pull and pull and then pull some more and just when you think the darn thing will never go off, then it finally does. After a couple hundred rounds I developed a feel for it.