No, I'm not.
The Pico works fine with US S3s, but not international ones (it does work with international ones via a powered USB hub, but that doesn't interest me as part of my portable rig). This was already known, and it seems the Note 2, being based on the Exynos SoC has the same problem with the Pico. It is the only USB DAC I am aware of that works with some S3s and not others.
The Leckteron is confirmed working with the International S3, which is why I want to get it, as it should work fine with my Note 2.
USB audio is definitely working on the Note 2, as it does in the S3, it just doesn't play nicely with the Pico (sadly).