Exactly. That's why generalizations are dangerous.
About danger, earlier this year I spotted a 210/9 Repro-Claron in ebay.co.uk for very little money. So I went to the archive.org version of Schneider's old site and downloaded the Repro-Claron brochure. It says that the cells will go in a #0. I bid, won, paid, the lens arrived and guess what? The cells' barrel are huge, won't fit any shutter I have.