Gavin King has been featured in a podcast where he has some nice things to say about Grails. Transcript here. Thanks Gavin! For what its worth Seam makes JSF palatable ;-)
In related news Gavin also has a blog post about the downside of ActiveRecord storing model info in the DB. The funny thing is this is nothing new, we realised that having your model in the DB was a crap idea from day one when we created Grails. That is why GORM has not such deficiencies.