How to change Hermes Config Project Property from cmdLine?

SOLVED:

Add a custom project property using the -P directive on the command line. Using the name and value from that directive, use property expansion in the "Project Properties" tab to change the "Hermes Config" value...

So, on the command line add a -P directive such as -P"HermesConfigPath=file:///C:/.hermes" as a Windows OS example.
Within the SoapUI "Project Properties" tab, find the "Hermes Config" Property and make it's value be ${#Project#HermesConfigPath}
Within the SoapUI "Custom Properties" tab, add a "Name" of HermesConfigPath and a "Value" of file:///C:/.hermes

That "Value" should be the path that you normally use and you won't have to adjust it on the command line unless you need to. When you run the project on a remote Linux computer however, you can then point it to the Linux file structure path when run from a command line without needing to adjust the SoapUI project.

Note the use of the "file:///..." syntax. The loading of the hermes-config.xml file location expects a URL, so if you provide this syntax to the file path, you will eliminate a warning in the soapui-log file that is generated when it cannot load from a URL. The warning information is a little alarming as it attempts file mode operation if it does not find URL mode to its satisfaction to the valid hermes-config.xml file.

Warning generated when value is: c:/.hermes
No warning generated when value is: file:///c:/.hermes

This comes in handy when you are developing your SoapUI projects on a local windows box and use a continuous integration scheduler such as Jenkins running on a Linux computer. You want to have the same SoapUI project be able to run from either OS without maintenance.