Check out http://www.testearly.com/2008/08/07/springs-so-groovy/. It appears Spring has support for JRuby, Groovy, and Beanshell. These are all nice JVM-based solutions, meaning the users can tap into Spring through these tools easily. We need to keep Jython in the back of our minds as well. It would be nice in the future to bridge between Spring framework and Spring Python.
I wonder...if Spring Python was reachable through Jython, could we compile some type of jar file that would allow JVM-based solutions to use our python solutions? springpython.jar is a very interesting idea.
If someone was picking between JdbcTemplate and DatabaseTemplate, I can understand not wanting to compete. But if you talk about remotely communicating from a groovy client to a python server (through pyro/hessian/web services), things start to sound nice! This may be the hook to plug python services into a grails app.