Yes, I know alot of carpet cleaners run a Sebo Duo - but I do advise upgrading to a more serious CRB for agitation. The difference is marked. The Sebo brushes are just to short. You need to get to the bottom of the pile to get the dirt loosened .
Bloody hell, Jim - is that your drive you cleaned that on? If it's a client's, you have a power washing job available for the taking.
regards