I would prefer a coating that was very slick and slippery. Rhino liners actually have some gripping to them to prevent loads from slipping in the truck bed, while a grippy bucket interior won't be a problem when hauling around a lot of materials such as stone, gravel or bark. However stickly soil, soil with clay, etc, might simply get stuck inside a bucket if coated with a material like that?
My ideal would be to have some sort of Teflon type material on the bucket, durability would however, not be up to par with a material coating like Teflon. /forums/images/graemlins/frown.gif