The " grid " on the floor of Olneys is similar to what I was referring to and allows the heavy grit, etc to fall through. The rug being vaccuumed, I think, appears to be on a large table !
If you were to use hand tools at that height you will get a very sore back, due not only to the stooping forward, from an upright position, but from the downward pull of the hoses.
Horses for courses, I suppose.
Whatever method you use, if you collect / return you will need decent sized premises about the size of a two car garage. However, it's good to experiment and a single garage wll cope, if you stick to small / medium domestic rugs.
Bear in mind..........some rugs cost an awful lot of money........don't gamble with them.