Hi Dads
Thank you for your response, I was aware of their intended use. I first used this type of paint to use up a can I had left over from my RC days and found the finish was quite good, providing the can is a good distance away from the model and the coats are applied thinly, hence now trying a different colour that I picked up from my LMS.
I will start to explore more suitable paints as my skills with an airbrush improve. I've just started spraying dealer supplied paints, thinned with cellulose thinners having spent a few years dabbling with acrylics and despite my initial fears these are actually easier to use and much easier to clean up afterwards too.