Thanks for the responses guys. I'm aware of the difference between Campy Ergo and Shimano STI on front shifting (and I also prefer the traditional Campy design with all of its capacity for modulation).
I'm glad to know the Campy FD's seem to have the same actuation ratio as Shimano FD's. I'd heard that once before but wasn't confident about it.
I doubt my brother-in-law (whose bike it is) will be switching to Campy shifters, but maybe in the future if he gets way into things...
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"c" is not a unit that measures tire width