Hook 'em up! Keep those idiots off your beeehind in the fog. Personally, I'd have an independent switch because I like to run the driving lights at night a lot. But I'd imagine it wouldn't be too difficult to hook them up to the driving lights.
I have the euro fogs as well, i just tapped them into the tail lights, and they come on with the headlights. You are the only other person I have ever seen wtih these, are we the only 2 in the country????lol