This is something I never even thought about, but it makes a lot of sense. I recall buying replacment pots for old tube gear, some 45 or more years ago, and you bought them without a switch, and bought the switch separately, which then attached to the rear of the pot. Apparently those pots were made to be used with a switch, but also worked without one. I never noticed any "dead spots" on them, or had problems where I could not turn the volume down low enough. Apparently that was all taken into consideration when they were made. But back then, it was a lot simpler. You chose audio and linear taper, and the correct resistance, and shaft length. That was about it. I recall getting many with LONG shafts that had to be sawed off and a flat spot filed onto the shaft.
The good thing back then is that the shafts were all metal and did not break off.