From my own perspective (I’m old school navigation) I’d use digital mapping for planning and print-outs at an appropriate scale that makes the map portable (e.g. double sided A4 inside a plastic wallet). I haven’t got a GPS for countryside navigation but agree that the service-based approach will pervade. Given my use-case and the alternative of dropping cash on paper maps, would it suit me?
My friend’s friend currently achieves this by using Bing maps, rotating the screen and scaling the browser to fit the required route followed by judicious use of print screen but I’m sure he’d not object to paying royalties at the right price for the appropriate solution that clearly owning the full set of paper maps can’t readily provide.