Absolutely! Looks like a certain box wasn't ticked on itch when we did the keys but if you email us on email@example.com with your backer ID we'd be happy to supply you with a Steam key :)
Wonderful, thank you!
ETA: For anyone who, like me, wasn't sure where to get your backer ID, go to the project page and click on the tier you backed ("View your pledge"). It's at the bottom of the Reward section.