Looks like the third-party manufacturers have pulled through. Their versions of the hood have begun to appear on eBay.
Here's the link: http://www.ebay.com/itm/171135970172?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
I've ordered one and it looks like there's 8 of them left at $13 shipped.
Hope this works out well. I've been after one of these for a while. They will probably come down to half this price in a few months, but still...
Thanks! I just pulled the trigger - $13 is fair enough for this. I suspect its pretty useless for mitigating flare, but I like these little hoods for a small measure of physical protection. Will live on the lens.
I probably will have few occasions to remove the hood as well. I tend to store the EF-M lenses with hoods on, front caps off in a Domke F5XB. It makes getting them out and ready to use just a bit quicker and keeps the front element safe from rubbing the bottom of the Domke.