No, I was caught completely off gurad on my way out of my shop, after a long day. I just wish I had collected one, so I could see what it was made of. I don't believe that photographs are much proof of anything these days, they are pretty easy to alter, and I don't believe photos of things that seem unlikely. I had to see this myself, dispite hearing about it from several other people that I trust and know well.
I hope that this is something you will never, ever encounter personally.