FYI - I've been hanging out on the TS server daily even when I'm not playing just to see how much use we're getting out of it, and the answer is... um.... rather potato like :-)
That's cool, not forcing anyone to use it, completely optional!
If you're curious and want to play with it a bit without forking out the $5 for iOS (I'm guessing Android is the same? Anyone? Bueller?) there is a free PC and Mac Version here
Just plunk our server address 54.68.211.91 in and the password and say hi