I've worn a Sport Kilt and a Stillwater Standard in Chicago before. The Sport Kilt is entirely too lightweight for city wear, when the wind flies around street corners like mad. Stillwater Standards are okay, but I still recommend a sporran just to keep your front down for sure.

I have not ordered from the Frugal Corner, but I can say I have read that their service is sometimes great and sometimes not. Be prepared to wait a while on a kilt from them.

Also, military kilts from What Price Glory are nicely priced and come in 24" length.