Still popular. I bought a magnetic display stand from Grant Batson about a month ago and Vauen also makes one which I have. I love them, I assume all Rad does is put the stand underneath the fabric so that the pipe stands up during the photography. See below.Bigvan explained that the "ball" is steel, and it is part of a pipe display system which uses the ball and a magnetic base to allow display of the pipe every which way. Apparently, this type of magnetic pipe display system was popular some years ago, but I'd never seen it before.
http://www.smokingpipes.com/accessories/pipe%20accessories/moreinfo.cfm?product_id=70658