They still send the domain name on cross-origin requests, so the type of filtering Vimeo does will be unaffected as far as I can tell. It's only when the targe

They still send the domain name on cross-origin requests, so the type of filtering Vimeo does will be unaffected as far as I can tell. It's only when the target website needs the full source URL (with path and GET parameters) that you may encounter issues.