I suppose I wondered why A) there are no pants, but I've already seen twelve threads on this in the last week, B) there are distinct Indian and Mexican classes, but a severe lacking of Indian and Mexican clothing when compared to the traditional clothing. Ponchos, and Indian necklaces, but only tomahawks when it comes to weapons.
I'd say throwing in some new items, even if it meant duplicate bonuses, just for the sake of being able to dress correctly, as opposed to wearing an Indian necklace, a Mexican poncho, and a pair of good ol' American boots, as well as using some rotten piece of wood you found in a holster made of dried cactus on your hip, would be quite nifty indeed. I created an Indian character for roleplaying, and da**it, he needs Indian clothes!