No. The plugin uses maven dependency management to get the required libraries and native components depending on your operating system
Use a dependencies element in your plugin configuration to override the plugin dependency on ''com.google.gwt:gwt-user'' and ''com.google.gwt:gwt-dev''. Please note this only works with maven 2.0.9 and later.
This plugin, beeing part of the Mojo Project, can benefict for a large community of maven developers. It's async interface generation feature is AFAIK not supported by other plugins.