It appears that the iPod Classic 30gb can be formatted to work with WBFS formatting,
and recently the question came up of wondering why iPods of larger size like the 80 or 150gb will not work for this process; I have tried.
If there are any new storage formates other than the ones already known from the lists then it would be helpful to posts any successes you may have had with them. The flash drive as of late is barely cutting it.