A SWAN Project - for now - is a folder inside $HOME/SWAN_projects, that contain a hidden file named “.swanproject”. If you have any folder you would like to convert to a project, you can copy it inside SWAN_projects and then add the hidden file. No need to use git. Then you would be able to use the embedded share functionality.
Either way, everything - projects included - is stored in EOS and also accessible via CERNBox. You don’t need to worry about creating projects as you would be able to access them from anywhere (sync client, lxplus, etc).
As another option for sharing, you could use the CERNBox web to share a folder with anyone. But this would mean that the receiving person would not see the share inside SWAN automatically.
Hope this helps,