I can see it being a useful tool for mapping 2D artwork to the associated perspective pane.
That said, it can be a bit tricky at first. I'm using an image in the perspective I want to set up my grid and will then attempt to redraw the image by mapping to the panes. Yes, I could TRACE the desired perspective image, but I can get much more detail illustration the side view then mapping afterwards. Plus I need the practice

Any tips or ticks out there?