Great thread, Fred!
This was really interesting to read! I love the simplicity and efficiency of steam-cleaning, and the idea of sanitisation without the use of costly (and potentially harmful?) chemicals!
I have a Morphy-Richards steam cleaner designed a little like a canister vac - a main unit to generate the steam, a hose, wands and a floor-head. It works fine (although the plastic wands start to flex when they get hot, which is irritating), but I know exactly what you mean about how quickly the pads get saturated and require replacement. Sounds like a challenge for a company that solves problems - a zero-consumable steam cleaner! I wonder if it would be possible to design the head of the steamer like one of those self-wringing mops, so you could wring out excess water into a bucket or something...
I'll have to look into getting one of these stick-style steamers, they sound much more practical than the canister-type models.