Thanks for the responses, guys! I looked over on the Steam forum for the game and found that some players were put off by the Uplay that Ubisoft uses. From what I can tell, Uplay is a DRM system that also allows players to connect with other players and earn achievements. At first, this extra DRM thing doesn't sound too great, but I've played other games with achievement and social connections (Dragon Age-Bioware and Sims 3-Origin, for example), and haven't had problems.
My main concern is the FPS aspect. I don't think I'd be good at it. The open-world sounds good, but maybe I should just stick to Skyrim.