Got my Neo2, playing some early tests. The plastic enclosure is unfortunately useless: it's 3D printed, and it doesn't fixate the heatsink. Also I broke the enclosure while trying to insert the board. Fresh Armbian booted fine, and with a WiFi dongle, it's much more stable than OPI0 (OPI0 hanging up after less than an hour).
What I noticed, is that it doesn't come up after a reboot, and needs a power cycle.
here I wrote a short summary: https://txlab.wordpress.com/2017/04/16/friendlyelec-nanopi-neo2-a-better-sub-20-linux-computer/