Recently I have spent the day troubleshooting a not-so-common piece of AirWatch together with a customer - the Remote File Storage or RFS. And then news of Personal Content going End-Of-Life hit us. So let's look at the topic in detail. There are 2 kinds of storage in AirWatch currently (until 3rd of January 2020 at least) for the 2 kinds of documents:
It all looks straightforward, until we get to macOS and Windows notebooks. For Windows, we have the corporate VMware Content client, but it simply dumps the documents in a folder on the HDD. No inner protection used. Why? - Because we can (and should) configure BitLocker by central policy to protect all the contents of the Windows machine HDD. So it is not the client VMware Content, which serves as the "protected container" - it is the Windows machine itself!
For macOS the situation is strangest of all: historically there is only a Content Locker Sync client for this OS. Seems like macOS users do not need corporate content. macOS also has cryptography on the HDD partition level, controlled by central policy, but out of the box we can only sync personal content there.
What clients are often trying to do is try merge together VMware Content and Content Locker Sync - point them to the same network file share for instance (deploy RFS, point it to a file network share, then install VMware Content and point it to the same file share). This will not work at all due to the fact that RFS technology uses blocks to store lots of files. So what the user will see on the file share are strange files with long IDs - the presentation of block data on an object-level file system.
The viable solution to the absence of functionality is to use native portal clients. Examples: for Sharepoint portal there is a Teams client in Windows and macOS, for network file share there is an old-school method via WebDav envelope. In macOS and Windows we can use these to access corporate data with all the native restrictions configured on the portal level, and then propagate these files further to mobile devices using VMware Content client.
So currently, until VMware/AirWatch developers present something new, the this seems like the best answer: use corporate portal or repository clients to sync documents with macOS and Windows, while securing the HDD with central crypto policy, and use VMware Content client for the mobile devices. See a list of Content Locker Integration portals.