In response to the previous posts, I think the problem is that the Harvey maps use subtly different shades of colour (rather than symbols) to distinguish the various types of terrain. By omitting things that you cannot (usually) see on the ground such as county/administration boundaries the maps are uncluttered.
Back to the OP, I use paper maps in a map case - the latter is convenient for keeping a pencil for marking times and photo locations on them as you go.
The problem with most map cases (apart from them flapping about in the wind) is that they're sized for maps and not sheets of A4!
Being (very) old school, in bad weather I miss my old anoraks - their chest pockets were sized for carrying maps - no flapping problems! No ridiculously stiff laminated maps in those days - but you could buy cloth backed ones which put up with a lot of abuse.
I wish OS would print their maps on the same polyethylene plastic that Harvey uses for its newer maps (older ones use a waterproof paper).