i used to loathe this setting,no i love it,just as long as you know what your touching,it makes inputting different values so much easier.
the thing that is really cool about that setting is it is also velocity sensitive.
so if you touch a note that is 95% on velocity,the next note you input will also be 95%
where it works best is with scoring out drum parts in the prv.
i have used both Step sequencer and PRV to score out my drums and the PRV is so much easier its not even funny.
when you figure out how to rightclick/lasso boxes of notes and drag them around,it puts Step sequencer in the dust.
unless your using a lot of swing values,thats where the SS excels IMO