I'm a big fan of Neil van Neikirk's - in fact I would say that I learned flash from his writing - but I don't remember reading this particular item and I didn't see it on the page to which you linked. At any rate, if it provides the results you want, great. I think it was pointed out because it's an unusual setting and later could be the source of some unusual results if you're not aware of it.
_____ Brian... a bicoastal Nikonian and Team Member
My gallery is online. Comments and critique welcomed any time!