I did a lot of UML modelling with several UML Tools. Now I see a trend to more domain specific languages and customized tools. Currently I do some research for a customer solution to transfer a big UML model to an EMF model and to build a specific GMF Editor for the customer DSL.
My experience of Model Driven Software Development:
I have been working in projects which used MDSD practice since 5 Jears. In those projects we used several MDSD Tools: AndroMDA, OpenArchitecureWare, some self written code generators and currently Eclipse EMF with GMF.