Greg mentioned the three-way portion of the Splatfest demo. I wanted to echo those comments. I was Team Scissors who were ahead in the North American section. Playing in the 2-on-1 setting was pretty rough. I lost all but one of those matches. Greg was right in that once the central piece was taken one time, it was pretty much impossible to catch up. I frequently felt pinned down in my own area because one side could easily head me off in trying to get to the center, while I couldn't pivot the other way lest I run into the other, other team. I think the other players on my team might've been using voice chat because they kept jumping to each other, leaving me alone. The times I tried to join them I either got immediately cooked in the firefight or just lost behind them on the map.
None of that is to say that I hated the experience. It was very novel, but it was also a little frustrating. The leading team really gained nothing by protecting the middle of the stage, but could easily lose the match once it gets taken a single time. And it was exciting to have a different perspective in a turf war, with enemies on either side instead of down the field away from you.