It will, it is hard to train your eye to look for proper tiller if you haven't seen much of it.
The gizmo is just another tool to make sure you are not missing anything on your limbs while you tiller.
I have an artists eye and can see very small anomalies in a bow tiller, I wasn't always this way but learned over time, the gizmo trained me.
I could tiller without it, but why, it greatly speeds up the process, prevents hinges, low poundage from chasing tiller up and down the limbs and generally has you coming in over poundage so you have a lot of room for fine tuning the tiller.