Can snapshot back up a standalone site and then restore it to a multisite installation?

Before I waste a ton of time on this I need to verify if Snapshot can take a standalone installation backup file and then import it into a multisite install?

Likewise, can I take a snapshot backup from one multisite install and then import it on a different install?

Finally, are there any plans to directly import from Amazon S3 rather than having to copy and upload files to be imported?

Thank you for the help.