This is AWESOME. I was using the regular pineh64 images, and most things were working except my NIC kept shutting off about 33-34s after boot every time.
Turns out, if I use the pineh64-b image, my gigabit link stays active and everything seems to be pretty great!
My only issue now is that booting with a USB3 SSD attached directly to the device seems not to work very well. Maybe the SSD is trying to pull too much power at boot? It worked fine when I plugged it in directly after the system was booted from microSD, but cold boots always fail with direct attachment. It's booting 100% reliably for me with my rootfs on SSD if I attach the SSD to a powered USB3 hub, but I'd like it if it didn't need any extra hardware to boot.