At one of the old VCCC conventions, a club member brought one to the hotel and we used it in the hallways. I don't remember who brought it (this was 15 or more years ago) but it was very cool.
It was the same convention where RJ Vanik had so much trouble with his Vibra Beat stopping during the cleaning competition, clogged with dirt. He beat the thing on the test carpet to get it to work again. What a riot. The old VCCC sure had a lot of fun. I believe Jimmy Martin entered his Hoover 28 with the hole in the bag, filling the convention room with dust. "Self Emptying" he said. Good times.