Just received mine this morning. It is the YOOBAO version, not the ebay version. Charged it on the external charger while I went out. First impressions of the items are:
-The cover doesn't fit perfectly, but it is pretty darn close. I think the upper right corner is pushing the cover a bit and is therefore not sitting 100% flush.
-The battery is for the Droid Incredible, but we use the same battery so no worries there.
-The cover is pretty tough to take off! It snaps in really well along the top at the right side, so it'll take some courage to take it off without snapping it. 
-The cover's finish is almost identical to the OEM cover's finish (rubberized).
-So far, 10% drop in 7 hours. I'm therefore looking at roughly 59.5 hours until I hit 15% according to my calculations, but I do not expect it to actually take that long. My usage comprises of light texting (~dozen messages), moderate web usage (~3 hrs), 5 phone calls (roughly 5 minutes each), GPS use for about half an hour, about half an hour of games, constant email checking (Google Talk) is on in the background too). I am also constantly logging battery use via System Panel monitoring. 
-The hologram sticker on the battery is a legit YOOBAO hologram.
So far, so good! I might buy an ebay one after results come through on batteryboss.org (mainly just to have another spare battery cover). I will also continue to use this until Monday and then I'll send in the battery to batteryboss.org for testing.