Alright so, as most of us are already aware, the Spies vs Mercenaries game mode will not be featured within Conviction itself at launch nor will it be attached as DLC. As unfortunate as news may seem, would you think that it might very well be possible that the team is working on it as its own project to be made exclusively for XBLA/PSN?
I think something like that could be very likely. This would allow the team to focus development on it directly after the release of Conviction in order to make it as good if not better than today's multiplayer standards for the series. Look how good Battlefield 1943 did, and it was a multiplayer only title as well. I'd pick up a standalone version of SvM for $15 without question. I guess the true question remains: Are they willing to make it?