Hi Alan,
The Sebo Duo dry compound machine is excellent for the agitation of pre-conditioners especially on domestic and commercial carpeting but if you intend to use in the pub, club environment then both the drive belts and brushes will wear quickly. Sebo do supply stiffer brushes but the machine isn’t designed for this type of soil loading.
It certainly beats agitating carpets with a pile brush though!!!
For heavy protein based soiling I would recommend either the Host or combination carpet/floor contra rotating brush machines from Duplex or Rotowash.
Regards
Steve