Let's say it like that: I also got the expansion for it ^^.
Combat is hard at the beginning, but will get easier later. Can be very intersting, because there are *some* strategic skills, and some skills can be combined very well with the crafting, which is itself also an interesting part (because you have quite some possibilites with all the armor, weapons, slots for different things, your hired craftsmen, etc.). Combat itself is not very complicated though.
The story and setting is for sure also the usual fantasy stuff, but less diverse (there are...humans and goblins, more or less), but has definitely its own humour, and it's also worth doing some the side quests, just for that (some have different possible endings, and you can also fail at some, IIRC). What is not the usual fantasy RPG part is that you can transform into a dragon (after a certain event; not everywhere; not possible to fight enemies on the ground as dragon), fly around the world, and fight in the air. Very majestic to see the world from above.
The world itself is also definitely worth having seen. I'm not a big fan of TES (have only played Morrowind), because the world is so generic, which is definitely not the case here. Quests, characters, and the scenery are for most of the time unique, and worth looking at. Due to the dragon/flying mechanic, you'll also see some stuff which you can't see that easily in other RPGs, like a big landscape with fjords (dropped down from the top? Transform, and fly again upwards), with castles on platforms within them, and other places to explore. Sometimes you really only want to see what's going on at a certain space, and how you can get there. It's a very nice world (not graphically, that's outdated).
Toughest part is not getting discouraged from the hard battles at the beginning, but then it can be a very nice game. I'd recommend it, and if it's just for the games world.
Compared to:
- Morrowind: Smaller, but more unique; story more motivating (although not a lot); wandering around, exploring and killing stuff is more interesting that in Morrowind, due to the more unique world
- Witcher: er...not comparable. Divinity II is more open world, less focus on story, and it's also high fantasy
- Gothic: World is bigger, setting "cleaner", less unique world, but more to do in regards of character development