Whether or not there's a check is the only thing that might have beeen debatable before, but now that FFG has made their ruling we might as well consider it a fait accompli.
Inventing a check is a very big deal. It's a completely unstated concept in the rules even before you get to the timing, it breaks the atomic nature of abilities, and the nature of the check is completely undefined. What says whether I can succeed or not? Having a token seems to qualify... What about room to complete the move? That's an equally important condition, does that one need to be precleared?
And I'm not even going to touch how the check interacts with failed attempts to decloak.