CustomArt Music One FR graph from CA themselves.
So the first curve's vertex is closer to 1k than 500 so about 700-800. GoldenEars curve vertex is shifted to the left a bit more. The fact that it's shifted forward looks like it means slightly emphasized lower and midbass and slightly recessed upper mids. Still a really good balance.
As for the dBA values I don't know if it's compensated on the graph from CA.
The only thing I'm not sure about with going CIEMs is reshelling. I don't know how much it'll cost me to get another set of ear impressions and to send the IEM back to get reshelled. It's 600PLN for no cables for the reshell but impressions I've never done.