I finally tried this workout yesterday, and while there are a few things I don't like, it's a keeper.
What I don't like: no notice of what position the step has to be in for each cardio segment, so you sometimes have to change the step and back-chapter; Jari tells us to 'smile' a lot in this workout, which I think is corny; the male background exerciser looks rather nervous and is a distraction (scared-rabbit look towards the camera, fake smile, never seems to blink); and Jari is painfully skinny in this one: you can see her ribs even when she's not stretched out (at one point she comments about how the workouts have changed Lori's an her bodies, and I was thinking "If Lori starts looking as scrawny as you, that would be an argument *against* using these workouts in my book!".
Like most of her workouts, this one seems to go by quickly, because you don't stay with one thing for too long. The cardio/plyo blasta are very athletic and intense, and keep the heart-rate up (but I don't see the need for a stretch after each one?). I usually sweat a lot when I do RTTC, and it was the same with this one. I think compound moves are rather deceptive: they don't feel like as much work as heavy weight work or isolated muscle work, but they use more muscle and increase the metabolism.