Why the hell do you need roads on your map? Can't you not get to places without roads? lol
You know.
Roads usually lead to places. They're usually a safer, shorter, more convenient and confortable way to get to such places.
That's why they were built in the first place.
Hlvr's suggestion of an in-game map that you equip much like a weapon would be a great improvement and a natural expansion of the dual wielding approach.
Here's hoping TES VI includes it.