I just added this to the wiki, but I thought I'd drop a note here as well. We just launched a new T5.2 based site (www.zadachite.com) deployed to GAE. The public content on the site is mostly static (using T5 for the templating and a few components), but there is more to come.
This app has been in the works for quite some time (started it around T5.0.3) and has gone through quite a number of deployment options (from standalone hosting, through Mor.ph, finally settling on GAE), a number of security related options ( from standalone spring security, through chenillekit-access, then back to spring security w/ t5-spring-security) Thanks to the all T5 developers and the whole community for all the support and help along the way. It's been quite a trip ! Regards, Alex K