While the Model 10 and Model 36LS have doggedly held on as Smith's only regularly-catalogued blued guns, the recent appearance of last year's Model 29 Mountain Gun and this year's Model 25 Mountain Gun and the Thunder Ranch Model 21 seem to be cause for hope.
Most of the demand for blued guns is driven by nostalgia and hard-core gun nuts that like to spend their free time shooting, going to gun shops, and talking guns on the internet. Casual shooters seem to prefer low-maintenance stainless, at least according to the sales figures.