Hahah thought he meant the regular vapos, havn't even heard about the 'pipe' style myself.

A kid I know had one of the hot plate with the glass dome vaporizers, the glass dome had broken when it was being shipped so he tried to fix it with electrical tape. It took a good while to heat up and the vapors tended to escape, you could hit it eventually though. It seemed to me the high was a bit different but we usually smoked and vaped so I couldn't really tell.