In all my travels and times to a Naturist venue, I cannot say I have ever seen anyone I knew from the textile world, who was there and I was surprised. If that did happen, I would not react with any degree of nervousness as simply they are there for the same reason I was.
It always seems weird, a little bit, that some folks are completely 'ok' around strangers nude, but with people they know, even family members, they sometimes are weirded out by it.
-D
