The
gile is generally attributed to the Afar people from the horn of Africa. According to Wikipedia:
"The Afar principally reside in the Danakil Desert in the Afar Region of Ethiopia, as well as in Eritrea and Djibouti. They number 1,276,867 people in Ethiopia (or 1.73% of the total population), of whom 105,551 are urban inhabitants, according to the most recent census (2007 ). The Afar make up over a third of the population of Djibouti, and are one of the nine recognized ethnic divisions (kililoch) of Ethiopia."
It's unclear whether the Afar are also in Yemen. I have never heard of the gile being referred to as a Yemeni jambiya.
Ian.