I'm still going to have a second GPS because the Moving Map in the Skyview is basic and difficult to add the flight plan. I use another GPS with PocketFMS and can change flight plans while I'm flying, go to nearest, see boundaries etc etc.
Dynon will be releasing software for flight plans for about USD$500 and I don't know what the yearly update fee will be. Maybe one day it might be good but at this stage not as good as an external GPS.