Personal safety should always be a valid concern....but most of the people I'm going to be spending any time with, other than at a range, I've met personally on a social basis previously, or at least my wife has met them...
Having spent most of my life in law enforcement related activities and my wife used to be a corrections officer, we are pretty good at sizing up people through limited contacts..
If it were someone I was going to be hunting with, normally we would have met and discussed strategy, or practices, before ever climbing in a car to go anywhere,,,since I wouldn't want to get out in the woods and then have to discuss how things were going to be handled...I like to know how the other person thinks before getting into a shoot/don't shoot situation...