Tekkb, the windows machines have some folders/files with leading "dots" which are then marked as hidden by Samba when saving.
Anyhow I was mistaken Samba and OMV are working fine. The issue I think was client side caching. Restarting the windows machine fixed it.
It would be nice to selectively enable and disable "hide dot files" for [homes] shares instead of globally. Not an issue for my use case though.