I find them dead easy ... less messy than chickens and ducks (though that's not difficult!)
They eat less, drink loads (ours do anyway) and we've got lots in together, and have no real probs with fighting. the girls get abit feather-pecked due to over amorous males, but again, they are less aggressive than ducks over it.
from Easter to Septmeber, they lay plenty every day. the season is shorter than hens I find, but quite reliable.
they don't seem to get "traumatised" - you know like if you move hens they stop laying abit - ours put up wiht a lot really (!) and have been fine.
I have one of those runs with a coop inside up a ramp, made for a few hens. the run is open all sides & there is shelter underneath the coop , they are backed by the pallets of the goat pen. They stopped out all winter and we didnt lose any.
hth