Sure you can. I have had the mix for years. Geese with cayuga ducks, muskovies, mallards, roens, call ducks.The only problem I ever had was the geese being aggressive when it comes feeding time. Tyhe geese like to be the first at the feeding dishes. If there are ducks around the geese will shoo them away until they are done then the ducks get their turn at the rest. Geese aren't big eaters so there will always be food available after the geese are done.
I have not had any issues with sleeping quarters, ducklings being harmed. Geese are clumsy and don't pay attention half the time where they put their feet. I have had duckling issues a few times from being stepped on but that is about it. Sometimes male geese can be aggressive during the mating season and can do a little damage if the ducks are in the way.
Different geese different traits I guess in the long run. Shouldn't be much for issues but do keep an eye this time of year...mating time. Have fun with the mix... Steve.