I tried it and it didn't work for me. I got all the tyres on the rims no problems, followed the instructions and the video on the site and it was pretty easy.
What I didn't get along with was the fact that I always had one eye on it whilst riding…always wary of slashing a sidewall, and always paranoid I could hear/feel them going down. I ended up having five instances of having to put a tube in over the space of around seven rides. For all of the faff, not to mention the mess and expense of the system, I deemed it a failed experiment and have gone back to tubes. Not until having sold my rim strips on the classifieds page, that is 8)
Perhaps I was unlucky, perhaps not. I'm building up a new set of UST-rimmed wheels this winter so will probably go down the full UST + sealant line in the fullness of time.
Sory I couldn't be more positive!