Oddly Jagwire even has Campagnolo and Shimano specific brake cables. Not sure why since brake cables are very interchangeable and use the same heads.
Campy brake cables have a reduced diameter head as well. It's more common for generics to sometimes just adhere to the campy head size with brake cables, as I've never heard of anyone having issues with using a campy-type brake cable in a Shimano or SRAM brake.
For campy11, I definitely prefer genuine campy cables. I havent had the constant issues some people have had with Gore, and I do like their stuff, get em while they're still around. I have a strong dislike of Yokozuna brake housing and anything Nokon, and would rather skip the other segmented housings like mini I-links n such...