This has been my standard white liner for a while now. It's fairly dependable to be stable from a hot cone 5 to a medium range cone 7. It's a good fit for Laguna Clays' cone 6 B-Mix and Cone 6 RedStone ware.
The big down side is that it's a bit hit and miss when refiring at lower temps when burning in decals. Lots of unpredictable pitting.
That can be a good thing... (bring in the enamels).