That is a bummer. Well, it will end up taking some manual work to combine the numbers into a separate report, but I have added an Event to our Google Analytics that will track how many times an embedded form is viewed in the Event area of Google Analytics (we are using the analytics.js version). We can then take this data and figure out some conversion rates and do some A/B testing. Below is what I put after the Marketo Javascript Embed. Incase anyone else is interested 🙂
<script>
Marketo JS here
</script>
<script>
ga('send', 'event', 'Marketo Form', 'Form Displayed', 'NameOfFormHere');
</script>