I can confirm that the Linux version works. I can also confirm that the Windows version runs perfectly fine on Linux via Proton as well (only tested GE-Proton 7.42).
Interestingly, the Linux version defaulted to only 50% audio (In the system settings, not the game settings), while the Windows/Proton version started with the full 100%. Other than that they seemed exactly the same as far as I could tell.