I too use all different types of ceramic cookware in my Kamados. I like ceramic as it cleans easily. (never Pyrex as it's a PITA to clean) I have ceramic pie pan, ramekins, casserole dishes, it's all good.
Just go buy the cheapie stuff from Walmart if you are worried about ruining a high dollar piece. That's all I use. I think most ceramic is good up to around 500*. I've gone that high before. I've even stuck them in my pizza oven for a 20-30 second blast of Super high heat to melt the cheese on whatever dish I was cooking.
Was using RO lump.
To end this cook.
Mrs skreef cooked some corn bread fritters to go along with the Brunswick Stew.
In the end the taste was spot on the money. The texture was all wrong. At 6 hours it was perfect and I should have pulled it then. Unfortunately I didn't. It stayed on for a little over 8 hours which wrecked the texture. Oh well live and learn. I have a few tweaks for my next batch.