Yep, I have a flock.
If they are raised separately, (so Muscovy know that they are Muscovy, not chickens, or calls, or whatever), then I think it works out fine.
I usually keep my Muscovy in their own pen, but last winter I put them in with the chickens and they were fine. Mostly the 2 groups just avoided each other.
My drakes have been great with the females and the ducklings.