Grails or Gaelyk for medium sized application

I'm开发者_C百科 planing to start working on a medium sized application (not too complex but not too simple either) that'll run on the google app engine. I had earlier decided to use Gaelyk because of the support it provides for GAE but I have discovered that it has no templating support. Is Grails then better suited for this purpose? Or can Grails templating be used with Gaelyk as well?

If you read the tutorial on the Gaelyk website, you'll notice that the templating system is indeed there and covered.