I did this with my boyfriend last night (with VP requirement of 3) with a Mut/Con/Tha deck and it was pretty fun. It ran longer than expected (an hour and a half) but he's still learning the game. I do think it's done better when it's a less confrontational deck as if you have a lot of attacks in it there it's likely to end with someone dying and their teammate running away with no shot at victory. With the deck we used there was plenty of chaotic conjuring that really emphasized the "capture the flag" mechanisms (throwing up walls to block pursuers, etc.) which was fun enough that I might even switch Thaumaturgy for Mentalism or Alchemy.