I've had an email from someone who has pointed out that both this and La Rage d'Adam are unrepeated and have been suggested at 9b/+, but this is in at 9b+ and Rage is in at 9b.
I think we should try and be consistent here if nothing else, and the style guide says when a slash grade is suggested then take the lower grade, so I think we should go 9b for both unless someone wants to make an argument for something different?