Our annual WI ride has two of us using GPS and 30+ using paper maps. When they get confused they always turn to us to figure it out. And several times a day I end up correcting others as they make wrong turns based on their map reading. And we chuckle when someone calls out for a "page-turning" break. 6000+ miles of group riding has repeatedly shown GPS to be better than paper for convenience.

Now having said that, I always carry a paper map in the trunk bag. And one day I kept refreshing (recalculating) my route because it disagreed with the paper maps (paper maps show the exact route and my gps route is derived from it) until I discovered "recalculate" means "try a different route thru the same waypoints." Arrggghhh.