Sorry if I answer so late but automotive forums mails ended up in my spam..
By the way:
- noise present when clutch engages
- no service on ac system at all since ten years at least, no leaks, works great
- I can spin pulley freely, no bearing game but a really light hiss
- I can spin compressor by hand, not freely but not stuck, seems correct to me
Looking closer at the compressor, bearing should work when clutch is off so it is not my case.. not lucky.