There is no difference in the installer for Xeams Community and Enterprise Edition. It will run as if you have purchased the Enterprise Edition for the first 30 days. It will then get converted to Community Edition unless a license is purchased.
James,
Although we have not done this in our labs, theoretically speaking, you should be able to do this. Check http://www.xeams.com/external-tool.htm for details. I also recommend checking https://social.technet.microsoft.com/Forums/Azure/en-US/992cf5d5-514b-4930-b7ac-55e35470665f/command-line-scan-entire-directory?forum=FCSNext for some tips on how to use its command line version.