Just chiming in… I can confirm that the latest versions of both Jetpack Contact Form and Simple Facebook Connect are incompatible. I had to disable Simple Facebook Connect for the Jetpack Contact Form to show up. (Also migrating from Contact Form 7.)
Is this something that’s under consideration at this time? A ready-made random review widget would fit my requirements exactly.
It’s been six months with no answers… Have you developed the plug-in yet? ;-P