Storage is fast, CPU performance is solid, PCIe for ethernet works just fine.
Now if I could just get one with 64G of RAM and 2TB of SSD... ;)
edit: the setup process is still far from polished but that's not unexpected this early, and it's still in a 'build your own kernel' state. But it was easy enough to get going in an hour or two with a pointer or two from IRC and from reading the wiki.