I tried it on my nuvi 200 and the result was not very good.
It displayed a little strange and did not look as in Mapsource (or my 60CSx which displayed good). For serious use I would not recommend it but just for fun if you are going with a ferry or something like that it is OK. Possibly the display could be improved by the help of TYP-ing but I do not know if it is possible, have not tried and will not.