But your MAC OSX and Linux machines do have good Internet?
Anyway, I'm typing this now on a Linux computer, so the customer in me would love to have a Linux version! I have a nicer monitor on the Linux machine than I have on the Windows machine.
If I would look at it from Telltale's standpoint, though, officially releasing a game and saying you can run it on these other operating systems using these other products means you kind of have to also offer support when it doesn't work for someone. If the reason it didn't work is because of some flaw in the Codeweavers product, what are you going to do? If there were a huge demand, it might be worth taking this risk anyway, but if there were a huge demand, it would be worth writing a native engine so you wouldn't have to use CrossOver or Wine or anything else in the first place.
So get all your friends to install Linux and create a huge demand!