My buddy has the same set. The faces of the chips are textured so they stack fine and I haven't seen any spinners.
The demons are extremely small to my old eyes, but most of the chip colours are unique enough as to avoid confusion. The 25c and $5 chip are closest in colour. I think the chips are laminated so the faces have worn and the colours have faded over time, which I believe is very common for ceramic chips. FYI even ceramic chips are technically composite and not made entirely out of ceramic.
I don't think you'd kill a ceramic or Chinese clay composite set with the volume of games you'd be hosting. My buddy leaves them in his unheated garage but I have yet to see a cracked chip.