I use the aimer and pretty much never try to intentionally miss it unless it's a putt under 3 ft, at which point it's probably 50/50. I don't feel it has to be exact at that point, so as long as I'm on the right side of the break, and I hit it 1-1.5 ft past the hole, it will go in 99.9% of the time.
I've never tried putting from long distances by intentionally missing. I don't know... maybe I'm missing out... but it seems like it would be harder to master.