Kanga and I just did a simulation Encounter following the rules that have been hashed out in this section. Various people popped in and out and can be witnesses, like Ebail, Monbrey, and Kaiser. There were a few mistakes, like one involving a Flamethrower and half of the northern pond mysteriously disappeared, but it was really fun and an enjoyable new way to battle. I think these Missions will be awesome.
All the details of the battle (including turn-by-turn maps) are located at this link. Kanga and I are interested to hear feedback from this battle so we know how others feel it went.
Just a note, we used the Speed turn order system (but everyone gets a move inside the same turn), and Trainers could move 3 spaces and had HP, DEF, and SDEF stats of 250.
If there are any other questions as to how it was run, please post in here or ask me privately. Looking forward to implementing this!