Yeah I went for the boxed version in kickstarter. But it's more or a prop than a real boxed version.
You do get a box and fun stuff in it but the game is on a usb key (although a nice looking one). They don't have the budget for a real run of boxed copies. Maybe later if they turn a profit. It's really just a gift to backers willing to pay for it. Like the t-shirts. Bling to get backed.
Well it's downloading now. I'll be in soon!
Edit: I'm in! The steam workshop already has cool stuff like resources for random encounters and stuff like that. I'm definitely looking forward to the modding community on this.