Using stoneware with orchids

[plantluvver]

I will be taking a ceramics class later this summer. We will be working with Cone 10, I beleive, which means we will be making stoneware. Does anyone had positive experience with stoneware planting containers? Mostly I have Oncidiums and Phalenopsis, though I do have one Stanhopea. I am also wondering if broken scraps might be useful as a planting medium? Though I recall that the bisque firing is a lower temperature, so I think it may be more porous.