Gah! Guess I just created a Twitter account for no good reason, as I was just perusing the 'ask a question' section of the project page, and somebody already asked whether the game was going to be Steam-only? The reply:
The game is definitely built with Steam in mind, with the kind of cool features that entails, but we haven’t confirmed whether or not the game will appear on other platforms. Right now we’re just concentrating on making a great game and keeping you guys updated on our progress.
Make of that what you will. Regarding the funding front it's going slowly, obviously, since none of the gaming sites seem to have caught on yet. Still, almost 4% out of $133k isn't all that bad considering it just popped up with little fanfare.
Edit: Well, since I now have the damn twitter thing I decided to spam RPS, PC Gamer, Joystiq, and Eurogamer with the news. Just in case.
Edit edit: Having that twitter thing made it ridiculously easy to sign up to the Gambitious site, so I badgered them there directly, asking about a possible GOG/DRM-free option. After all, they ought to know that some people would prefer that.