Discomfort is not the reason I would ever decline to carry openly. It is not physically discomforting nor is it somehow mentally discomforting because of any supposition about what other people think. So yes, I am comfortable openly carrying, not just sometimes when people will get the "right impression," but all the time. However, I do not practice open carry for a reason other than discomfort. I can give three reasons:
1st: it's tactically disadvantageous
2nd: most of the time I do not want the attention of witnesses for any reason
3rd: there are times when I do want the attention of witnesses and attention to the firearm is counterproductive to my purpose
My choice to carry concealed never has to do with comfort level. If I ever do carry openly, it is because it is compelled by law in that state where the state's AG believes it to be unlawful for me to carry concealed and would prosecute me for it.