They're already selling a Tornador (marketed under several names, but the same) with several steam/Tornador heads configurations (mainly the lance part is angled, straight or curved) here in the States. However, they are using smaller steamer units that do not push the steam and the Tornador attachment like the one you see in the videos you've listed.
What you want to accomplish is a matter of finding or fabricating a fitting to fit your steamer (similar to purchasing a foamer canon and choosing the adapter). The vacuum attachment would need a hose to withstand the heat of the steamer.
A killer combination though for cleaning and better than a steamer alone or a Tornador alone. I'm studying a means to adapt one to my Dupray steamer.
