Have a read of this:
forum/topic.php?t=13908
I definitely think the App is the way to go and slowly that's what people are moving too. I had too many complaints of people not being able to use the map when out and about, some also not making any sense of it, and the App cures that.
Unfortunately that also removes the POI file for your satnav and if I bring that back, it is then too easily converted back to a map, stolen, and out all over the internet like our last one