I liked it. But lay it on thick is the key. It works if you put it on thin, but very difficult to get off. I recommend using those white testors brushes for applying it to large, open surface areas. I used a medium micro-brush for making the detail geometry I wanted.
What I liked most is that you can lay it down on a painted surface and it did not comprimise the look or leave a residue. I used it for the typical 3-tone german camo paint job on my 1:72 FW-190 over Christmas. Worked really nice to fill the open areas with tape and then use Ambroid to get the look i wanted on the color borders.