the Swiss Air Force can only be bothered during office hours... The incident happened too early in the morning, this is why the French escorted them to Geneva.
And why exactly would the Swiss Air Force be intercepting a target in French airspace? If you look at a current map, post Roman Empire, you would learn that west, south & east Geneva is in French airspace. The north-west bound flight track did not penetrate Swiss airspace until the outskirts of the city.
