I found gestures difficult to understand when someone else (from Jolla) presented those. I tested few of them with demo phones on Wednesday and already earlier two weeks ago, but it still felt like learning curve is significant. Wednesday when I got my Jolla I did exercises in wizard (available in tutorial app too) and since that this has been the most intuitive UI.

I love that you can use this with left or right hand and all gestures work naturally with both hands. I even switch the Jolla from hand to another depending what else I am doing while using it.

Browser experience is currently a disappointment. It lags and same intuition is not tangible in that app. Of course same gestures work, but I would expect to be able go pages back and forward just by swiping and that location bar and other controls could show up just with simple tap and other simple gesture. May be I will learn but currently I feel some inconsistency in the browser.

About battery lifetime.

9:30 (EET) this morning I took my Jolla from charger with full 100 % charge. I installed Skype (Android app) from Amazon AppStore and chatted with a friend for 10 minutes and browsed different settings may be 15 minutes.
11:30 battery level was 85 % after being rest if the time idle
11:55 I switched Location OFF from settings at battery level
76 %
12:26 battery level 1 % down since switching location off
12:30 my Jolla started jamming so badly I had to restart it. Battery level 72 %. I used phone to read twitter notifications and to use twitter with browser for 20~30 minutes (WiFi).
13:42 battery level 69 %
17:00 battery level 54 %. reading messages 15 minutes while connected via 3G. Download and installation of What's my IP address from Jolla store (3G and Jolla in moving car).
19:14 battery level 35 %
19:25 battery level 33 %. Playing with display brightness settings and switching to manual and minimum. I can barely see any difference between minimum and maximum.
20:29 battery level 26 % after 3 minute Skype audio call and idling an hour.