Grails with Aptana Studio 3 on Mac OSX

Setting JAVA_HOME: (http://www.oreillynet.com/mac/blog/2001/04/mac_os_x_java_wheres_my_java_h.html )
setenv JAVA_HOME /System/Library/Frameworks/JavaVM.framework/Home

Setup Grails (http://www.grails.org/Installation)
git clone git://github.com/grails/grails-core.git
Set the GRAILS_HOME environment variable to CHECKOUT_LOCATION/grails-core
Add the $GRAILS_HOME\bin directory to your PATH environment variable
Go to the GRAILS_HOME directory and run: ./gradlew libs

In Aptana Studio Workspace
grails create-app grails-demo
New Project 'grails-demo'

Then in the grails-demo project
> grails run-app

Note that grails commands feel much slower than the equivalent ruby commands, and initial application startup is significantly slower. I actually was beginning to wonder if everything was working as the browser spun.. patience paid off and I was rewarded with the initial welcome page.

Also attempted to add some sort of groovy support, but without any real success. Java editor helps with syntax highlighting of terms in the groovy files, but is cluttered reporting other syntax and compile errors 'cause doesn't understand groovy.

Note that 'natures' do report several groovy natures, but these do not appear to be associated with any file types.