Wow Senseiman, You've got some Kahunas wearing those out in public, because I could never do something like that. I will just stick to the Jinbei when it comes to festivals, because those are comfortable and less exposing.
Geta are pretty comfortable as well once you get used to them, but it was a real test for me when I had to climb Osaka's Castle with them on. I thought for sure I was going to fall down the stairs, but I managed to complete the task successfully. I'm a boxer man, and I tend to avoid the speedos, and the male thongs. The Fundoshi type of occasion is one where Sisqo's words of "Let me see that thong," won't be popping into my head.