In general, you can make either matt or gloss paint come out semi-gloss with technique. If you put down matt paint very thick, it can look semi-matt. If you put down gloss paint very light and dry it likewise will look semi-matt (or semi-gloss- half full or half empty). For a good matt finish, put down several thin/dry coats rather than one thick coat.
Testors clear Dullcoat has been the exception, for me. I am not that familiar with the acrylic clear coat, however, but try putting that down in several light/dry coats like you would for the color coats.