SLC as a full-year vehicle

A friend of mine is thinking of buying a used SLC 200 and selling his other car. From the place, that would be enough, but he is not sure if it is good to use the SLC with the folding roof all year round, so also in snow. How do you see it? No problems? j. PS: How do you rate the price development of the SLC? Does it have chances of a small loss of value because it is no longer built?