ArmorOfGod
Senior Master
My school, we really don't do that, except for our "provisional" 1st dans. Most people pass our black belt test with a provisional belt (they have to test one of the areas again at the next test to pass full). Our provisional belt has a zigzag of thin white stripes. When you pass "full" you turn in your provisional belt, having written your name on one of the stripes.
Since most are only worn 6-12 months at a pop and have some breaks between tests, they last up to 10 years. You end up with some my younger students asking "Who is so and so" and you get to go into some really great stories about old friends/students.
That is interesting and kind of neat. Do you have a photo of one of these belts for us to see?
AoG