Yea Ive done 'em and enjoyed the fast track to a mind numbing stone. They are more for the 'lets get really toasted' times and not at all a casual toke. What I like about them is there is 0% waste of smoke (unless your lungs cant handle the blast of thick sweet smoke and ya cough it all out )
Your question reminded me of the days when I did buckets aka sink tokes.Good times.