That's an innovative design, and I'm glad it works for you.

When I backpack I find that any belt at all is uncomfortable beneath the pack's hip belt. I could probably get away with a flat nylon webbing sporran strap for a more modern approach.

Granted that when I go a-rambling it's for more than a weekend hike, but I also find a low sporran to be uncomfortable. I've used a bum bag turned frontwards in the past, but on my next long hike I'll be using a pack with large pockets built into the hip belt, so I won't wear any pouch at all. On shorter hikes, and without a pack, I'll turn the sporran to the side so it rests against the side of my leg and doesn't bounce about.

Andrew.