I have used it and liked the results I got. I have used it a few times, cannot remember all the colors. I know for sure I have used it over both Testors and Tamiya lacquers. 10-15 minutes between coats. If you plan to polish you will still need to do a straight clear. Also remember, you cannot spray this over enamel. As David suggested, the spoon test would be very helpful here. It will even allow you to keep track of how many coats are needed to get the effect you are after.