The schooling is different but the techniques overlap. Sally Prasch at Syracuse University (http://praschglass.com/ http://praschglass.com/) is a master in both

The schooling is different but the techniques overlap. Sally Prasch at Syracuse University (http://praschglass.com/ http://praschglass.com/) is a master in both fields. My personal experience with the bong types, though, is that the great majority is undertrained.