So after playing a few day with the Jolla ...

general:
UI:
different, stylish, promising
hardware:
fast enough, should not be any bigger, like the two halfs, camera is as worse as on all Blackberrys

OS:
for the 1.x - good enough, not complete consistent, needs more ability for custumaziation (lockscreen, events, ...) - many good ideas and (thanks god) not another clone of iOS or android - there should definitely be an option to open notifications from the lockscreen (like in meego) an the ability to show rss- and calendar-feeds (and wheather and ...) on lock- and/or events screen (also like in meego)

Stock-Apps:
sorry folks, that's not enough - the email client needs a thread-view and better handling of attachments (I want to decide where to save them ...) - the calendar is too basic (and desperately needs an open api - other apps must be able to save appointments - fahrplan for example) - and the browser needs a complete overhaul in usability (to many clicks to open a new tab, ...) - on the other side the rendering is really good and fast

AppStore:
Well, for such a small user base the majors won't develop apps, but if Jolla would allow paid apps, the would be for sure more dev willing to code some alternatives (it worked for meego and even for BB)

Android:
wow, I'm using different OS with Android runtimes for a while now (apkenv on N9 and N900, BB10) and must say, that's the best one ever! The Question is, if that is blessing or curse - even the Jolla people tell their costumers to relay on android apps to compensate the lack of sailfish software (or even the shortcomings of the stock apps) - so let's see if there will be left more of this great idea than another android launcher ...

conclusion: yes, I like it. It's a great and customizable time-waster ;-) I had much fun playing with it, but I'm not sure if it could be one of my daily drivers - for my business device (now BB Z10) I need a good email-handling, and a top calendar - for my private device the opportunities are the camera, the browser and news-feeds (which are better on my Lumia 620 - except of the news feeds- and the N9 - except of the browser )

So I think, I'll keep it for some time and the future will show ;-)

If anyone is interested in buying a N9 (16 GB cyan perfect shape) a Lumia 620 (two backcovers, good shape), a BB Z10 (good shape - a small scratch on the housing) or a Jolla (like new with a white and a aloe TOH but without charger and cable - lost both two days ago with my satchel :-( ) all located in GER - drop me a private message - if the price is ok it could simplify my decision ;-) ...

good night