Having had a couple of very uncomfortable moments in ladies' rooms recently, and partly inspired by Melissa's post about pushing your comfort zone, I decided to take the plunge and use the mens' today, and so while I was out and about in the course of the day I used three different ones, and didn't feel any sense that anyone noticed or cared. I think I'll still prefer unisex or single use ones for awhile, but after today I don't think I'll hesitate to use any one if the need arises and it's the only one available. I'm glad I got through that mental barrier. Feels good.