I'm wandering what the attachment would look like for the demo hammer, so I'm curious for Jhall's pics.
For drilling I have the spit version of the bohrfixx shown in the video posted by neeleman. (same thing, but orange instead of black) It works, but for drilling in walls I prefer a piece of ducktape and a postal envelope, stuck to the wall just below the hole. Minor drawback of the vaccuum attachment is that you need a slightly longer drill, and for the smaller hammer-in plugs I use I have a centrotec bit that's just the right depth, when I drill it in fully.
I also have a drill with an early version of the attachments shown in the other links. I bought it years ago, and it was an AEG (I remember that the price of the machine was in Guilders instead of Euro's, so it must have been before 2001.)
I really didn't like it for several reasons: it always left a dirty spot on the wall, the size of the round thing; it made the drill longer and heavier than a normal drill, and it was fussy to set up, (you'd have to hookup a frame with a dustbag to the machine, attach the telescopic thing with the little rubber shroud, and a little hose)