@aydraper, serious answer this time: I think it’s better to wear just any old low sock along with a set of triathlon aero compression calf sleeves. They cover more skin. They are more secure. The added compression decreases aero drag even if the trip lines are a little out of place. For a long ride like DK200 I believe the compression provides some additional comfort/relief.
From my studies on the matter, I would agree with Dylan’s findings that the Rule 28 sox are faster than the Silca. But IMHO that’s because the Rule 28 sox I tested are about twice as long. But, also in my tried and tru experience, the Rule 28 sox last about as long as a pair of velotoze shoe covers. They are just not a durable item and they’ll start slipping fairly soon if used in a gravel capacity.