Phil, can I ask what standard fabric cleaner you use that gives superb results on suites that you clean?
With all due respect, I gave an opinion as to what I use (trafic lane de-greaser amongst other chem's), and when you actually look at the product it's relatively mild, and will not damage any fibres so long as pre testing is done - like ALL chem's!
Why do people have hang ups about trying different avenues. For a newbie I wouldnt advise it but at the end of the day a fibre is a fibre whether its on the floor or on a frame. Synthetics, naturals, mixes etc all need cleaning and so long as your sensible, test, dont use excessive agents and approach it professionaly, there wont be a problem.
Fabrics are more complex I know, and certainly need kid gloves at times, so I would always advise to PRE TEST PRE TEST & PRE TEST! with what ever chem you use. Correct fibre identification will also assist in what method to use.