Bill,
You are spot on when you ask: what are my expectations? I want to sketch on the bisqued stoneware surface with white porcelain slip. I want the slip to have a celadon-like effect ( which I currently can achieve with my clear glaze. ) But I hate the intense sheen the glaze creates on the stoneware. You are correct—I have to test the glazes on my surfaces. However I will also go to the glaze directory for some answers.