If you are going to a country with a different alphabet having a map that shows locations and streetnames written in the other alphabet helps a lot. Being technically illiterate in a strange country is a big pain. Last year I ventured into Russia and the first thing I did was throw away the map and metro map I had with only Roman characters and used the Cyrillic maps I found.

Best situation is if you can find one that shows BOTH. That way you can read the map easier when looking at it, and if you need to check a sign against your map you can also see the alternate graphics to help you compare.

Just peeked into the default map for Moscow in the N810 and it's all in roman characters. So wouldn't have helped me.

I actually studied the Russian alphabet before my second trip and things were much much easier second time around. Sure I didn't know what the words WERE for the most part but being able to even recognize the letters and signs makes a world of difference.