Its an OEM RIM case. Made available to those who have the T-Mobile in the UK.
I hunted ebay.co.uk for weeks until I found someone who was offering one...and asked if he would ship to the US.
Oh, and the sleeper function works as it should (unlike the Milante case)...and it doesn't press any buttons while inserting.
If you're interested, use the search term: "8700* case -nikon -krusell -aluminum -aluminium -glove -leather -skin -hard -charger -silicone -crystal", and it should filter out most of the excess garbage that people advertise on eBay. They're pretty rare though...that was the only one I saw over a 4-5 week span. ebay.com.au is probably worth checking as well.