Hi John and Eric,
Alclad is very easy to use, it is pre mixed so it goes straight into the airbrush, drys quick, and has a very durable finish.
The only downsides are, it smells horrible and can give you a headache with prolonged use, so you need to wear a mask. It does shoot through the airbrush rather quickly and you must keep it mixed otherwise the metal flakes settle to the bottom of the cup.
Alclad is definitely worth the effort and with several colours in Aluminium, some nice panel variations can be applied.
Andy