Ok, here's the one I boght:
http://www.ebay.com/itm/Version2-0-SD2VITA-PSVSD-Micro-SD-Adapter-for-PS-Vita-Henkaku-3-60-for-All-Cards/112528330193?ssPageName=STRK:MEBIDX:IT&var=412915828929&_trksid=p2057872.m2749.l2649
It arrived after only 7 days, but I still haven't got the 64gb microSD card (it's Samsung EVO, and I am praying it's not fake
, payed it 27$ on ebay).
I took a few pics, a comparison with original Vita gamecard, and how it sits in the OLED and slim Vitas. My oled one is legit and on the latest FW, my slim is modded with Enso.
The spring mechanism works as it should, but you have to fiddle a bit to take out the adapter completely (it's like 1-2 seconds of fiddle it left and right while lightly pulling out), also when you put in the sd card (i have one 4gb just for testing, but I didn't set it up on Vita, is there a way to test the adapter without too much work?) you mustn't press it in, you just need to get it to spring in the microSD reader on the adapter (don't know the word for this
).
Because it happens that when you press the adapter to sit in the Vita the mSD will pop out, and then you try to pop in the mSD, the adapter will pop out. So, you need to press it when they are both out, and the they will both sit flush in
It protrudes a tiny bit, and you can't close the gamecard compartment all the way. On the slim it protrudes much less, but on OLED it protrudes quite a bit.
This is only problem if you use hadngrips like I do (on the slim there is no problem with with this, at least for me).
Here are the pics I took:
EDIT: And now I tried adapter with 4gb mSD card and it works