communication beetween viewComponents and mediator

hi all
i'm using pureMvc in gwt and i like it!
after reading the doc materials i've found that in the original implementation in Actionscript the comunication from viewComponents and mediator is implemented in the following way:

mediator -> viewComponents [this is done by directy method invocation]
viewComponents -> mediator[this is done by dispatching custom events from the components witch the mediator is listening on]

Since now for this interaction i've used the notifications system of pureMvc, but now i
agree that the comunication beetween viewComponents and mediators is somewhat local comunication and should not use the notification system.

Unfortunatly before 1.6 the event system of gwt was more primitive of that of flex and was difficult to create and dispatch custom events from components. i've gived a look at the new event system of gwt 1.6 and it seems ther is space for declaring and throwing user defined events, so i'm starting to think that the implementation of puremvc4gwt could align with the best practice highlited in the documentations.

I'm intersted in hear someone opinions in this.

ciao
Federico