Oz-

I agree wholeheartedly with the UtiliKilt suggestion. The other beauty of the UK, and of your desire in general for casual, is that you can probably dig through the bottom of the coat closet (or wherever you keep your boots) and find something that will work. I have an old, beat up pair of "garage" Docs, a new pair I got for casual work wear recently, and a pair of Red Wings...all work with the kilt, and they're things I already had. With the UK, there's no need for a sporran, just pick up a belt and a buckle somewhere...you could even, I think, have a belt made from sturdy leather and pick up a buckle of your choice, and have somebody local put it all together for you. Since the kilt holds itself up, the buckle doesn't need to be particularly tight, so there's less likelihood the pin on a small standard buckle will oval the hole in the strap.

If you're really looking to kilt up...talk to SHO about an 8yd PVC, if I remember right, they run around 400 bucks. A cheap (I do mean cheap...it's "particle board" leather) sporran is 15-30$ with chain and strap, and if you're going casual with a t-shirt untucked, hoodie or sweater, there's really no need for a belt. Hose you can get for 20-30$, flashes maybe ten to twenty bucks...

But...my advice is, spend as much as possible on the kilt itself, since it's the foundation for the rest of your kit, and look through your current clothing and footwear for things that already work.

-Sean