Hey Raf,
You're CCV shouldn't be pumping out that much oil vapour, if it is there's another problem on hand. As for drips, yeah you might have to deal with 1 or 2, personally I've never see any on my driveway (I'm guessing they are all out on the road somewhere). I don't get any sort of smell in my cabin either (Gotta remember there isn't much coming out of that tube at all... Most of it is stuck to the inside of the tube anyhow). As for freezing, unless you're using an extremely small tube, that's not something you should worry about. There's no where for the water to build up and freeze, now if you ran a catch can or similar, that's something I'd be worried about once winter comes.