I have never encountered a male
Camille either in person or in media ... except maybe in passing. So honestly, I have a hard time imagining it on a guy, at least one from my part of the world.
My image of it on a guy is of a nineteenth century French dandy.
On the other hand, I think if a peer named her son that, I'd quickly learn to see its masculine side, and mostly it'd just seem French to the max. Too French for me to use, definitely. But not unappealing.
- mirfak