Chat Origins - using custom object fields?

Content

re: https://cloudcustomerconnect.oracle.com/posts/1da47425c4

 

I'm planning to implement something almost identical to this, though we don't use Engagement Engine. I don't think this will stop me from being able to though, will it?

 

My main question is about the text field. As we're limited with Custom Fields, would it work if I created a field within a custom object instead?