If you want project specific properties, still soapui allows to do so using setup script of Project where you can write logic to load the properties from a file with dynamic path using system property (like soapui does, say -DmyProject.properties=<filepath> at run time) and then read the file to load properties and set the properties at project level.
Hope this helps.
Thanks Rao.
Yet another option is to use a Properties Test step with parameterised file location e.g. you can tell it to load different property files based on a parameter / property value - for more please see post http://community.smartbear.com/t5/SoapUI-Open-Source/Is-it-possible-to-parameterize-the-user-credentials-in-the/m-p/103877#M18131
Cheers,
Rup
