I'm getting ready to build a barn, likely with LP Smartside siding. LP says that you can put "solid" stain on it (not transparent). My question is, is there ever a reason you would do that? It seems that the point of any stain is that it's going to soak into the surface some. Solid stain contains more solids which sit on surface, similar to paint, but any components of it designed to soak in to the surface aren't going to work on the primed surface of LP SS.
So is there any reason at all not to just use paint? What would the differences actually be between solid stain and paint on LP Smartside?