Update--not quite as awesome as I thought: Conflicts with Events Manager Plugin's Date Picker on the Event Submission Form...this could be a jquery related issue. Also, there are some sticky issues regarding the custom form selections.
Great Plugin. I love the fact that it works with Gravity Forms. You need to submit it to Gravity Forms as an Add-On. I looked high and low for something like this!
Kudos for your clean and lightweight coding! I only have one issue. For some reason, the submit button does not show any lettering. Trying to figure this out right now.