I'm also concerned about this due to being hosted by another server. Of course nothing prevents you guys from joining that event if you want and I'll be cheering for you if you do!
I've been wanting to do something like this too for a while, but never actually took the time to organize it. I thought it sounded fun, but the idea of putting our server's name on it and advertise a bit was part of the objective, I would expect the other server to have similar motives.
