You're right, and somehow I missed that when I was bouncing around looking at a bunch of different stuff. I don't know if anyone uses those options either. Unfortunately we have no way of knowing.I like that, but I note that the units options also allow for displaying stability as a length in meters, centimeters, millimeters, or inches. I have no idea if anyone actually uses those options, but in case there are users who prefer to see length, would it make sense in your example to show stability as "5.15 cal / 15% / 644mm," with the unit depending whether the user chose metric or imperial?
Showing three different measurements at once is (IMHO) pushing things too far. Possibly we will just ask for primary and secondary units, and show both. I'd prefer fewer preferences but in this case I guess I don't see any way around it.