The sporran, a necessity?

[cessna152towser]

I'd feel naked going outside in a kilt without its sporran. Unless the sporran is heavily weighted with coins it shouldn't cause too much discomfort when walking gently though I turn mine to the side when I take part in the Great North Run.

[Woodsheal]

The "historic" style of sporran (pre-1746), that hangs directly from the waistbelt, is better suited to active use. I've worn them running around in reenactment battles with no discomfort....