Interesting idea, but it's hard to overcome years of platforming habits and not do little tiny adjustments that cost several control points! I played up until the walls were killing me off before stopping.
I found a few bugs with the way it counts control inputs. Sometimes it didn't seem to count an input if already travelling left and you pressed down. Seemed inconsistent to me, anyway.
I love how quickly it restarts after failing. No waiting at all, just right back into the action.