As I said in the Trip Reports section, I just went to the beach. I expected that I'd be encountering people at least some of the time, and so I took a sarong, which I like for reasons I explained a few days ago. Well, the beach was quite windy and dealing with the sarong was a challenge! Unfurling a long piece of light and fairly slippery material is awkward if there's a breeze, and I'm glad I wasn't depending on it to keep out of trouble. I did wear it for a while, but before I got close to any observers, I put shorts on instead. So, it depends on conditions.
And a few weeks ago I went on an extended camping trip with a non-naturist group, where I thought I might wear a sarong in camp occasionally. I did that and it worked OK, but I found one evening that I'd torn the fabric, I assume on some bushes. A few inches of one corner were hanging down and although I could cut that part off without it showing much, it was still annoying. Unfortunately commercial sarongs are almost always made of a very light rayon material, which isn't always practical. It makes me think that for outdoor use, I should try ripstop nylon instead. But then of course, there'll be very little choice of pattern available.