Hello, I can confirm that the EX8000 works in principle with the Swisscom box. I would assume that it also works with the Sunrise Box.
But beware, the repeater function too often brings very annoying disconnections that put the pleasure on hold. I have switched it off, as there are no stable connections and no functioning changes from original WIFI to repeater WIFI. I hope that Netscape will finally deliver a working firmware, otherwise I'll throw the thing far away.