I was actually wondering about this a couple months back! Didn't bother to google it and here you are answering the question! Quite interesting. The part about the finger-segments had me saying 'damn, these duodecimal people have an answer for everything' haha!
Good post, and informed replies in the comment section.
I'm glad you liked it! :) I agree, the finger segments thing is quite ingenious. But if another base was more useful mathematically, I'm sure we would have found a creative way to visualize it.