Hi Stuart I have used it on a course I was on with Green Flag. It had just come out and we were evaluating it, no thats wrong, we were playing about with it, and although various wave forms were seen and differences could be identified the meanings of the differences and diagnosis of problems from them, I felt, where not as clear cut as the other sensor wave forms that pico is so good at showing. However it has potential and the idea is good. We did pick up faults with it but with my Crypton CTM2000 I whould have picked up most of the faults to. So I'm still to be won over, I would need to see more waveforms in the pico library both good and bad before spending £200+ on it.