Just because there is slightly higher chroma resolution with 4:2:2 doesn't mean that it is perceivable. I'd recommend putting out only blu-ray compliant files. Even muxing into a file container such as mkv can have unwanted effects.

The best would be to release the .264 and audio files together and let everybody mux them into whatever they want. I guess then there would be twice as many people asking, hey what do I do with these files? I can't watch them! LOL.

EDIT: BTW, it looks fantastic. Thanks a lot for sharing it with us!