Ive recently purchased one and think it will be a useful addition to my upholstery tool collection.
I don't think it will be the answer to all upholstery cleaning jobs, but it's nice to know it's there when I need it.
I also have the CFR, Prochem detailer & Prochem Truck Mount Uph tool.
The Saphire comes into it's own when you really do not want any overspray, like when doing car seats and when a fast dry is important.
Some get on with it just fine whilst others hate it. I have found that whenever you change or get additional kit, they take time to get used to, especially if drastically different to what you have been using for some time.
Dave.