We use it for quite some time on an EFB Class 1, currently slowly switching to Class 2.
It is nice enough, reads routes, airport and alternates from configuration files so you do not need to enter that stuff, just SID/STAR and instrument approach. On the class 2 device it can read it from the FMC, as well as ownship position, you can send the other pilot your clipboard as well.
The chart presentation needs some getting used to, but works very well then. I couldn't say if it is better or worse than jepp, haven't used their electronic charts yet.
Better than paper? I think so, depending on the device you use it on. Our class 1 devices are pretty heavy pen tablet PCs, not really fun to use them, the new screen of the class 2 device is quite a bit less heavier and better to use.