All tooling is available in JavaFX as well, so the framework is 100% JavaFX!
This year's CaptainCasa Community Meeting on 11th of December 2013 is a good opportunity to get to know the framework, the people around it - and to see a lot of JavaFX being used in the context of (big) business applications...! The community meeting is held in Heidelberg, Germany. More information is available here: http://www.captaincasa.com/pdf/eclnt_CommunityMeeting_IX.pdf
In case of interest please contact info@CaptainCasa.com.
CaptainCasa Demo Workplace, screenshot: