Last night I was watching video of a group training and the Okinawan senior used the term "Shikodachi." Now I've probably heard that before but it hasn't registered into my memory until now. It seems like most US uechi-ka use the term kiba dachi...or...maybe it is most Uechi-ka that I've met and people actually use both equally?
The Uechi horse stance that I saw most often in Okinawa is similar to the "shikodachi" and "kibadachi" of other systems except that the front foot isn't 100% straight forward North - it is turned in a little NW à la sanchin. There is a more forward twist at the waist so as much of the upper body as possible faces N, and the rear knee is at 90 degrees or less (so the rear foot toes are at least in line with the rear foot heet and maybe even pointing closer to 45 degrees NW than 90 degrees W.
But "Uechi Shikodachi" just might be useful. It will give karate-ka a frame of reference and then also let them know that it is a variation of a known convention.
more standard shikodachi:
De función similar al kibadachi, los pies se encuentran abiertos en 180 grados, lo cual permite , con pérdida de tensión en algunas masas musculares una mayor flexión con un centro de gravedad más bajo.
Of function similar to kibadachi, the feet are open in 180 degrees, which allows, with loss of tension in some muscular masses a greater flexion with a lower center of gravity.
Or maybe just continue to call it Uechi Kiba dachi....