I run carbon brake surface superteams on one of my race bikes. Not by choice per se. I needed wheels fast and the alloy braking surface super teams were not available.
My coach is pretty against carbon wheels with carbon braking surface. He had a really bad accident racing several years back where the wheels failed because of this. He wasn’t using cheap china wheels either. The front wheel failed while he was braking and completely blew apart, asploded. He ended up in the hospital.
Point of the story, if alloy braking surface is available, I would get that.