I have 3 different colors.
True - they are/were only used for the high roller games. I am not sure if they even use these anymore.

Got them as Tips out in valet.
They are very cool as you know.
2 colors I have - blue and orange - are slick as "wet glass"
The other black chip is a grid surface.

PS What's the deal with the very smooth "wet glass" feel to these chips?
They appear to be chipco - but I never had a chipco "feel" like this.