The method above to associate the mime type works with firefox mobile.
However now when an ica application is launched i get a translucient window and i'm unable to do anything with it. The same happens when i launch the .ica file from command line...
Maybe someone can package the client and the appropriate config+deps into a nice package...

Just want to also add that it works in easy debian just fine, so i think i'm missing some lib or have a wrong version...