In the USA we generally refer to shino as a type of glaze. They are fired in reduction, usually in the high fire range (cone 10). Like John said, most American shino are based on Nepheline Syenite, a soda spar, although if I remember correctly the true shino rock is actually a potash spar. Most American shino flash to brick red/orange colors, although color can vary from white to dark brick red. Many American shino also have soda ash in them, which causes carbon trapping, giving black areas to the surface (Google Malcolm Davis shino). Shino glazes have a satin, waxy surface that can be quite thick. They are stiff glazes, so a thick application won't run, but may crawl, which is acceptable and often desired. Unlike most glazes, the get lighter in color as they get thicker. Shino glazes seems to go with everything, and they look great with food. Go to Google Images and search shino and you'll get a good idea of the range of shino glazes.
Commercial cone 6 shino glazes are an attempt to satisfy the cone 6 oxidation folks' desire for a shino glaze, but they all fall short. Some are a slightly close approximation of the red/orange color, but none of them would ever be mistaken for a 'real' shino. Many commercial glazes are using the term 'shino' simply to refer to a particular surface quality. 'Green Shino'?!?!? There's even one out there that's almost the color of Pepto Bismol.