I don't think that is an option, for now.
Thanks for the answer. I would have thought that option would be easier to implement vs slowing a clip down. I hope we get that option soon,
I can't find Premiere Clip in the product list.
Not much is in the new wishform / bug report URL.
PremiereClip features can be added under the PremierePro header. (Under "Adobe Premiere Pro")
I've also added a request to the forum thread where it gets noticed too: