Mavic Open Pro CD

anybody use these rims?
thinking of picking them up to lace up a trainer set.
they aren’t quite ceramic, but rather some sort of anodized coating over the machined braking surface?
don’t know how to get ahold of mavic to research.

good / bad?
will i want to get different brake pads for these?

also, while i have you here…anybody have thoughts on open pro vs cxp?
as said, looking for trainers, tons of sh!t streets and potholes in chicago.
175lb rider, gonna be on a quintana carbon setup.

thanks!