Pretty good hoppy tool
Works pretty good. I first tried this on a 1:144 scale airplane with a tri-color camouflage scheme, and found it saved time versus cutting a masks from tape.  I had two problems: when applying over a painted surface the liquid mask 'clumped up' and contracted as it dried requiring repeated applications to cover an area; and, perhaps due to the small scale, removing the mask was tedious--it wouldn't peel and had to be stripped off using masking tape.
Rating: 4 stars