Just received mine, it took just 9 days (free postage) to reach Spain from geekbuying.com
Original packaging, as per the photos in the first thread. It took me about 5 minutes of struggling to get inside the clear plastic case, each end has a near-invisible piece of tape, in the shape of the case end!
I'm used to a 5000mAh pack, so this is bulky and heavy in comparison, but the additional weight and bulk is mathematical, can't do anything about that. Instructions in perfect Chinese. The on button switches on, and it will switch off after a few minutes of inactivity (I can confirm this) or if the maximum voltage is reached on the phone.
It charges while being charged, so thatīs a good sign.
Nexus4 4.4.4, ROM: AICP nightly KTU84P. Kernel: hells core 47b. Radio:2.0.1701.03