Question for the Experienced Body and Paint Guys

A guy an shoot single stage urethane and come back and topcoat it with clear if so desired.
The base in a metallic is easier to shoot and therefore many advise such or a rookie.
Having good light goes along way to a good job as does a good compressor with constant pressure.
So many peps today just want that super shiny look the clear gives. I just don't.
Some want an LS in their 65 Dart too! ha