"I guess he didn't care about the many other customers who were offended and intimidated"
Did you take a poll, how did you ascertain that anybody other than you were overly concerned about this guy?
"(after all there are a lot of people who are just plain afraid of guns)".
Wow, I don't really know how to respond to that statement but I'll try - guns are legal, carrying guns openly in Tn is legal, if people don't like it, too bad. The right to carry is not based on your appearance.
"It is situations like this that make life more of a hassle for those of us who have CCW and or LEOSA permits, and make points for those people who would restrict our rights to properly carry weapons".
It always amazes me when someone thinks they can dictate what is "Proper Carry"
I open carry and conceal carry depending on my mood and or where I am going and I will continue to do so until that right is taken from me.

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Woulda, Coulda, Shoulda