I have a friend
who is doing a lot of work with epoxy pours. They do a lot of live-edge stuff and river tables, but I'm not sure about over-pours.
You would need to build a form to set the table into to contain the edges, and you would need to do the epoxy in one continuous pour, and it would take a lot!
And there would be a lot of sanding!
My friend has a huge belt sander that they can send a 4-foot wide table through, so sanding for them is easy. Without it though, a 10' table is going to be … uhm … dusty?!