I have been using them. Mostly the datatools extensions. I plan on using the popup, but haven't hit any pages yet where I want to use it. The components are normal JSF components and should not have any complication for use in Seam.
I used popups but the problem is that the closewithaction handler is not working, kind of strange but it triggers the action and do everything but closing the popup window
is jenia like ADF in that it adds various JSF extensions that might either be missing or fighting with Seam's phase listener?