There probably won't be proper listen server support I'm afraid.
However you can still run a local "dedicated" server on the same PC as the client. That's what I've always done in order to get replication stuff working, going right back through RS1 to Darkest Hour.
Just add a shortcut to your desktop and add the appropriate launch flags. For example:
E:\Steam\SteamApps\common\red orchestra 2\Binaries\Win32\ROGame.exe server te-apartments?minplayers=32?maxplayers=32 -log
If you set an admin password in your config files, you can then login as an admin while connected to the server (adminlogin PASSWORD) and then run admin commands to add more bots, change map, etc. Or enable webadmin and do it through your web browser.