Unless youre really hooning about, which tbh I would advise against in this weather, youre unlikely to notice any difference as the Clios ESP system gives a reasonable amount freedom before cutting in!
Although saying this in current conditions its nice to know its there! Got a bit out of shape on a round-about over the weekend (not pushing on, just 3 degrees C and particularly slippy) and the rear end stepped out, I dialled in a bit of opposite lock and the ESP then cut in, making catching it pretty straight forward - on what was a very slippy road.
However......Im wary about these ESP systems...as they can lull some people into a false sense of security (a sense of invicibility) - numbing true driving ability, its good to know where the true limits of the car are AND how it reacts....so I recommend that you get out on the track and turn the ESP off.