Well, we must have completely different applications in mind then.

My experience with epoxy is building boats. Mostly spruce stock and birch plywood, fibergrass all around for surface protection and stiffening; 12-16 meters length.

Can't call this a pro operation, there's that.

Still in my experience, thin epoxy joins are the strongest.

We've tested spliced plywood to destruction - not once did it fail along the joint; delamination across factory glue was always the case.