Zkuq on 28 November 2013
The games are released by Ubisoft who isn't exactly known for heavy Steam integration. It seems, judging by the games' Steam pages, that there is absolutely no Steam integration which would indicate that the Steam version doesn't use Steam's servers for multiplayer, ie. you should have no problem playing the game. I'm not entirely sure but I'm confident enough that I'd buy the game if I was interested in it. Besides, neither of the Vegas games is very expensive.
