I am also very impressed with Simon's efforts and Harman's response to this. Certain other companies (who shall remain nameless) could learn a lot from Harman, I think...
I am sure there is a certain element of 'mutual suppor't at work here which might help make the idea a success. I'm sure that whilst it is an 'ordinary' stock item many photographers will think 'I'd like to try it one day' - but not get around to it, leaving Harman with unsold bottles.
Knowing the company has made a special effort to do a limited one off batch and I bet many of us will be in the queue to buy a bottle not only because it has now become a bit exotic (having been resurrected from the dead), but as a show of solidarity. I predict the first 'special order' batch (if they choose to do it) would sell like crazy