Well, my another hobby is electronics.
Some years ago I did modded my Sound Canvas (from Roland) to be able to use I²S. So I'm aware about how I²S works (their PROS & CONS).
I²S was invented to be used as INTERNAL connection right on PCB, and nothing else. In other words, NEVER as an external connection.
I²S is
VERY picky on clock signal. You will get a WORSE quality than USB for sure. You might "think" is better, but it is not.
If my memory serves me well... Amir did performed some tests months ago (or perhaps years). And using the right tools for it, not just "I think is better" guessing. It confirm what I'm talking about.
Before you ask for SoundCanvas, here you go... a video with my circuit working: