I can see that happening, especially on a new stretch.
Phones and GPS are sure handy when you're on the road, but when it gets down to fine detail of dirt roads and streams, I have been going back to hand-drawn maps more and more. I like that I can keep it to just the important info -- like roads, accesses, landmarks, etc. I label and scribble notes on them. Just did a trip out west -- mostly all new areas to me. Delorme atlas to get me close, then hand-drawn maps for the rest. I'm scanning them so I have a clean copy if I need them.