Towards the end of a chapter or a few chapters, honestly actually gets me invested (most of the time) in the characters including the way they look so I don’t end up changing them often a “____ looks this way and if I change them, then they won’t be _____ anymore.” sort of thing. But if it’s at the beginning, then I seize the opportunity to CC without giving how the characters originally look any real thought.
I enjoy stories with either though, so it doesn’t really matter to me from a reader POV. It could be of more importance to the author instead, whether they care or not if ppl CC.