In the summer we (my husband and I) would go hiking in the Angeles National Forest (I use the past tense because hopefully by summer we will no longer own a house in Los Angeles). I often wear a home made denim kilt for hiking. However, I have discovered if I am doing serious hiking, I can't wear it regimental. When hiking, I've discovered there is too much ... ummm... bouncing on the equipment, so I usually add a jock strap. Also, due to the bouncing, I swap out the sporran for a fanny pack -- which doesn't bounce, and stays put. It may not be the most stylish hiking outfit, but it is very comfortable, and stylishness is only half of the reason I wear a kilt on any day -- comfort is the other half.

OH, and I would never wear the fannypack as a sporran in any other situation.