I live on the border between North and South of Ireland and I can only choose to display either my OSI or OSNI maps, not both. The other side of the border is a sheer black void, not even the free map layers show. I cannot see both sides of the border and it looks awful, embarrassing even. Would this be acceptable on maps traversing other European country borders also? Not good enough and not useable in the border areas, avoid if you need to display maps from more than one map set.