Absolutely!! Without Aimpoint you're guessing on break amount and you're also guessing on speed. "It looks a little uphill so I'll give it a little extra." But with Aimpoint, if you've figured the speed for one 15' putt 90* to the 2% slope on a green stimping 10, then you've figured them all. You eventually get a feel based on those numbers.
So I'd suggest that when you're practicing putting, even if you're just practicing hitting your lines, also make a point to know the stimp of the green you're practicing on, and the length of your putts.
That said, I learned a lot more about speed control from Erik's putter acceleration thread than anything else.
Yeah, I tried to let the putter drop to the ball and I'm not saying that I putted well but for me to only have two 3 putts and average 2 putts per hole indicates I had good distance control that day and, at least, right now, that's good considering this season I'm averaging 2.144 putts per hole over 4 18 hole rounds and 1 9 hole round even though I'm not hitting GIR's.