Yeah, I don't expect it to be playable, at least for me; I haven't been able to finish a pvp game in the last two weeks. I'll probably show up anyway (if I haven't fallen asleep!) just in case, but I expect to have difficulties connecting. I do really like the idea for this one, so I hope it will be reused if tonight's tourney turns out to be a failure serverwise. I'm not sure how the meta is (I haven't even given it a thought, yet) so I'm not sure how it will be that way, but I think it'll probably be fairly good.
edit: I just tried tonight to get into pvp, and I couldn't even start a game. I wish you all the best of luck and lots of fun, but I'll just frustrate myself if I try to join tonight.