I have a few of these type of machines but the nilfisk advance brand. We use them for multiple types of jobs. Especially if there is alot of wax on ceramic and don't want to coat the hoses with flurry.
What's the weight on these scrubbers? Is there any pressure put on the scrubbers to put some elbow-grease into the scrub? Also does it have a heater for the cleaner? It looks similar to something we have but we don't get it out too often because we're usually doing carpets. For house cleaners in your area, try angie's list house cleaner reviews.