A variety undoubtedly at its best in Alsace, where it can produce succulent, rich, and complex wines of great quality, it has a spiciness seldom found elsewhere.  When coupled with an acidity that is lower than that of Pinot Blanc, an absence of spicy varietal definition will invariably be due to high yields.  This is why Pinot Grigio in northeastern Italy generally lacks the intensity of Alsace Pinot Gris, although both use the same clones.

Info : The Sotheby's Wine Encyclopedia 4th Ed by Tom Stevenson