Hiya Flint Pete,
Thanks for the heads up on this. Personally though, I am wary of getting too involved in the science of it all. I have products I have used and am comfortable with so tend to stay with them (I avoided the temptation to put "stick with them"!!!). It would take a fair bit to get me to try this out - presumably it would involve the expense of a UV lamp/bulb too.
I shall follow it from a distance and if I get some personal recommendations and see a convincible demo, may give it a go.
Cheers anyhow.