Now I see you're also a developer at KDE which certainly gives credibility to your statements! But on the same note I truly hope the information from the device will be encrypted on your server, and that an opt-out of this sync will be possible. And if there will be support for Owncloud or the like, you've literally made my dream device!
I truly understand and support that you don't promise stuff that aren't really made yet, and I really hope the privacy concerns will be taken as serious as they are.