You can, but I would not advise it, unless it is all you have. I would recommend Model Master Acrylic if you have an airbrush. I find it works much better.
The only reason I say this, in the last couple of weeks I have seen some real horror stories of people using Tester Dullcoat, from crazed paints and decal to hazed over finishes. Not sure why, but possible change in formula.