I will not wear short sleeves at work very often, my skin has to be on a good day for me to be comfortable doing that. Oddly, even though I know my firends really well, I usually cover up if I'm meeting them as well.
But if I am on holiday, or in a place where I don't know anyone, I'm quite comfortable with it. I am happy to sunbathe in just my shorts, or go swimming etc. No-one has ever mentioned it, at least to my face, be it positive or negative.
If I do see anyone out and about with obvious P while I'm covered I do actually feel angry with myself for not just getting on with it more. If they can walk around in t-shirts etc, so should I. I see it as a vicious circle, the more of us that are comfortable showing our symptoms, the more accepted it must get. If we essentially treat ourselves as different by covering up on hot days etc, then what do we expect others to think?