I've used it twice - I like it and wouldn't hesitate to recommend it. I topped with FMJ on a silver Mercedes, and was really pleased with the results. On a less brilliant silver (GM pickup) I used FMJ and Souveran.
from what I've read online this product has "oils" in it which diminish it's ability to bond with some sealants, so it may be best to top this with nuba instead.
I got some and here's my findings: use a little bit, a dime size on a pad will do half a hood, it looks great and I topped with Megs 26 - no issues at all.