This interview of his suggests that Hasbro were just as much behind Drift as IDW. It says they were 'happy' with it, but any approval by Hasbro would be more than just a passing tick of approval, especially IF they plan to make a toy out of it. IF the toy is true, then Hasbro would be on SMac's back to make sure 'their product' is represented in the way they want it to.