Yes, you can use acris also with GXT. Currently we are preparing the
showcase with "switchable" UI layer.
This gives you possibility to use also smartGWT or GXT components -
without changing your model and presenter layer.
Keep your eyes on acris-showcase-mvp project
http://acris.googlecode.com/svn/trunk/acris-showcase/acris-showcase-mvp/
which is currently in development stage. We will keep your informed
when showcase is prepared.
Peter