I agree with most of what has been described here for now. The fact that the wifi credentials are not stored until the setup process is finished is quite annoying. That being said, I have encountered no problem so far. Note that in France you can use your account from the FNAC affiliate, which I did, thus avoiding to create a new account I would not use: I only bought this device to read sideloaded ebooks which are availble in the public domain. By the way, thanks to the Calibre's people.
I have one question though. Among other things, the little booklet which enumerates the use cares states that the ereader should not be left too long in standby, because the screen could be "burned". I think this is a strange statement for eink screens. Is Kobo simply hiding itself behind a loose warning here?