I bought the pack mainly because in 2004 I played FarCry and never beat it. Mainly because the game was too laggy on my machine back then. Runs like 300 fps now.
FarCry = No Uplay
FarCry2 = No Uplay
FarCry3BD = Uplay
FarCry3 is still downloading but I assume it's Uplay.
I played BD for a bit this morning, and Uplay isn't that big of a deal to me. Syncs up to Steam just fine and while it sucks having 2 steam like clients going when playing the game, it seems to play nice in the sandbox so far and I had no issues.
First time I've played an ubisoft uplay game. But my opinion may change after using it more.