Windows should work since WebGPU can target DirectX or Vulkan and it should be possible to build in WSL.
However I was planning to announce next week after I've had a chance to test with my Windows-using colleagues and this thread came early, so it's possible we'll run into some hiccups.
Fair enough - I don't think there's any hard blockers to doing this, but to get the same QoL we'll want to add a dawn dll to the available prebuilt binaries and adjust the download script.
Will look into this in the coming weeks (or if anyone is up for contributing let us know).