I think the only difference is the pigment is much finer in airbrush paint, so may need a couple more coats than normal paint, but apart from that should be fine.
Very true. I use my airbrush paints with a brush for things that will require multiple layers, such as skin, and for hightlighting as well.
These are much, much much thinner than regular paints. Definately keep that in mind as layers, layers and layers will be needed.