Since the kilt, especially in representative tartans, is a wholly Scottish thing, it would seem to me to be in the height of poor taste to inflict it on another culture. I can see no justification, at all, for creating an "I'm an Indian" tartan, and in fact, I would view it as not only insensitive, but as highly disresectful of the people and cultures it is supposed to "honour".

If such a thing is considered "necessary" to reinforce a sense of tribal identity I expect that the tribal councils would have adopted the white man's ways years ago and created their own tartans...