C.R. MacKinnon suggests that a cantled fur sporran is appropriate for day wear (just not for 'tramping about the moors').

Even with a recommendation from an expert like MacKinnon, I tend to agree with MacMillan of Rathdown's opinion that metal cantles should be saved for evening. When I see somebody wearing a dress sporran with daywear, I can't help but think that the salesman at the highland shop must have been both especially smooth and desperate for commission to convince the wearer that his most expensive sporran was acceptable at any time.