I have no doubt that parts made by laminating thin sheets of material
with white glue are strong and white glue is very good for water
proofing but years ago I had difficulty painting white glue.
I used white glue and Floquil paint in aerosol cans on the first
Ambroid kits I assembled. The wet paint pulled away from thick laters
of diy white glue.
For a long time I used Ambroid cement dissolved in MEK to seal wood.