Not sure, but with the Viggens out of service, Sweden no longer has a dedicated (!) EW platform. Of course the Gripen will fill this gap, but maybe the mission-specific systems/doctrines haven't been fully finalized yet/ IOC not yet achieved? Tactics/manuals to be developed and tested first? I don't know but that might be the reason. And I suppose places are limited... or the Swedish AF is too busy at the moment, didn't see them at the RNLAF open days either...The Gripen was Czech ;-)