It's looking good Dave.

Although, hard surface modeling does not mean unsmoothed. It refers to a class of model that is man made / manufactured and as such has machined or inorganic looking components, with chamfers, bevels, tight edges, and corners or facets. All of which can be achieved in a smoothed model.

Hard surface modeling lends itself to many unsmoothed shapes though, especially boxy components where edge bevels do a very good job of replicating the look of a machined part, which your current model has plenty.