I'm reminded of my last trip to Scotland. I was sitting in the airport and some kilted lads came in heading for Ireland. Most were wearing t-shirts and boots with their hose scrunched down. Nice casual look.

However, almost all were wearing dress sporrans (mostly of rabbit fur with brilliant colours, such as bright blue, green, red, purple or yellow).

To my eyes the sporrans clashed, but after some reflection, I looked on it favourably as it was a group of young men wearing kilts. The mix of very casual with dress sporrans served as an expression of individuality (except that it almost served as a uniform for the group) - and showed they were not bound by convention or tradition.

I personally don't care for a full dress sporran worn with daywear or casual wear, anymore than I like a daywear sporran worn with a PC. But on the other hand, as Jock points out, this may be the only sporran the individual has, or perhaps is some special significance, so that is what he wears. I may not like it, but I try not to be a snob about it. At least the individual is wearing a kilt so thats progress in itself.