Who are you all kidding? Most of these will be toys for nerds that love this kind of high precision instruments. The precious tensiometers will be taken out of their boxes for those twice-a-year wheel build sessions, but they're mostly little collectables for display and admiration.
And yes, that's exactly why I have my FSA tensiometer, and why I will be getting that Wheel Fanatyk instrument. The tensiometers can keep each other company amongst the 10+ spoke wrenches and various wheelbuilding nicknacks, including the rare-as-hens'-teeth DT spoke wrenches. Some of us
don't want to be saved.