An interesting thread and a wide array of opinions made known, which is always good :tup:.
For myself, having only progressed to black sash/shodan in two completely different arts (kung fu and iaido) this has never been an issue, particularly as we don't wear outward signs of rank in iaido anyway
.
However, in my early years in Lau (I think I was a green belt when this happened) I ran into a 'new-starter' who, unbeknownst to me, was a black belt, shotokan karate. In the free sparring session, I was told to help this pre-'white sash' fellow out and show him whats what. He proceeded to wipe the floor with me in front of everyone, much to my embarassment (remember I was young enough to care about such things as ego back then
).
What I'm trying to say is that wearing the outward signs of previous rank is not only for that persons benefit but also for those they train with. I think that the decision under discussion (wear your original rank with a shoulder flash to show rank-in-style) is a good solution to a difficult problem. The other students know you are an experienced artist and also know what you have learned of your newly adopted style. No-ones in the dark or makes false assumptions and, as long as your sensei makes it known you haven't 'demanded' you wear your BB, everyones happy.
As to whether 'belts' are necessary {other than for holding up your trousers :lol:}, I have to agree with
Tez that they are invaluable to a Western, goal-oriented, mind set. They give a tangible sense of progression by small steps and also allow for comparison with your fellows.
Imagine if in the dojo you were thrown in with a bunch of people, all of differing abilities but you had no idea what was right, what was wrong, who was good, who was a beginner et al.
The rankings are to help people along by not giving them a cliff to scale all in one go. If you're a white belt training with your fellows and look over and see the 4th Dans going at it, you're going to think "I'll never be able to do that!". But if you see the yellow belts there instead, doing similar stuff to you but just a bit better, you think "I could do that if I practice a bit harder".
Of course, that falls down a bit in iai because we don't have that helpful visual clue. However, we know what rank we're all at anyhow because the class sizes are much smaller than an empty handed art. Plus, if we're being formal, you know where you stand, literally, because that is determined by seniority
.