There is wisdom here. I proved to my own satisfaction that with leverguns, the loading and feeding of the .44 Magnum is less of a PITA than the .357 Magnum; I abandoned the former and still use the latter, but I have no illusions about it. I would imagine that their .32 analogs would be even more fiddly.
And a bottleneck round - even a slight one - also generally helps in leverguns; the old .44-40 and .38-40 rounds are more forgiving than straight-wall rounds. When the old-timers wanted one round for both levergun AND revolver use, they were making some compromises for the sake of logistics.