I have not tried it. I do have Insight by Izotope. Both products cover the same area, but Levels looks like it is going for "bottom line" whereas Insight bombards you with information. I have found it difficult to get a real sense of things with Insight. For a more experienced engineer, Insight might be very well appreciated.
I did watch a video demonstrating Levels. I must say that my first impression was that this was overly simplistic, almost childish. But the idea started to grow on me because it can give you a good quick reference.
I am eager to hear user experiences.