Yes, basecoat/clearcoat systems are still paint, but they are formulated differently than enamels, with less solvent (called VOC, which forms smog). The result is fewer VOC emissions per paint job, which is why basecoat/clearcoat systems are mandated in a lot of places now.
But there may be exemptions for small volume work, so if enamel is desired, it may be worth it to look around and see if a specialty shop can shoot enamels.
George Davis
'69 280 SL Euro manual