You are not the first one to come here and get your pants in the knot over buying a domestic machine in the hope that it would stitch leather.
I could lecture you on how salespeople are trained to size people and their budgets but you clearly know everything already, so I'll let you be.
All I can tell you is that between myself and my wife we've gone over the 120 YO hand-crank Singer, a number of cast iron, pot metal, and plastic domestic machines, and now we own that which is in my sig line on top of 2x domestic Singers, 1x domestic Brother, and 1x domestic Kenmore of which only the latter is being used while the former 2x are collecting dust in the basement.