Different Cloud Service Configuration based on Runmode

Are different Cloud Service Configurations (/etc/cloudservices) allowed per runmode?

For example, if one wanted to use the Generic Analytics Snippet and use one snippet for author mode (tracking data to "testing" analytics account), and a different snippet for publish mode (tracking data to "production" analytics account), is that supported through the config.author or config.publish constructs used elsewhere?

If not, is there a recommended practice for implementation of this? My actual implementation utilizes a custom service configuration and configuration page, so I am able to create a custom solution if necessary.