I was wrong - the bulb in the TSA article was a "Bright Sun Desert." Preliminary searching suggests that they are not available in the US, only the UK.
Haven't seen any test data on it, unlike what was available on some of the more expensive bulbs...so, I'd be wary to use it until I saw some. Even saw it at a Petsmart the other day (I think $40, next to an $80 Powersun!). Its in the same price range as other lower end MVBs like the Fluker's Sun Spot. So no, I haven't used it (only Mega Ray or T-Rex Active UV Heat).
I've been using the 100 watt version for about six weeks now on two different enclosures. Its seems to be working great, but since my torts get sun all the time anyway, I have no way to know for sure.