Originally Posted by banerjek

I see people using those but I can't get myself to do it as I like a minimalist approach too much.

The map starts folded up in a pocket, but I find that when I'm trying to use it while moving, it gets wadded up rather than folded which doesn't work so well (particularly once it's soaked). Within a few hours, I usually have a pocket full of garbage. I can't put as much detail on my arm, but I've found I can consult what I have easily on a frequent basis. Decent ink stays on for quite awhile, even when wet.