First test. (Post your experiences here please.)

[heechee]

Ok, since I have two PCs here I tried playing with myself heheh on raqman's server. Both PCs connected and all I can say is that it is pretty not funny with a ping >100 ms.
Both players control the game simultaneously, both players can bypass the crackerscreen with space and both players can play both characters so it's important that one player uses only one joystick port. (can easily be arranged in the chat)
Having finished playing a game and returning to the chat I couldn't start another one, ccs64 would always bail out on me. ("player dropped from game") After closing the Kaillera client and restarting it works again.

I bet with a low Ping it can get pretty funny. Can't say how low though.. :-/