Have had both, but never together. The turkeys were too stupid to go into the coop when it got dark. They just sat down for the night. We have to have them inside due to prevalence of predators.
This was a real nuisance, compared to the chickens, that did it on their own. (The yard for them is totally screened in, even over the top. It's only about 4' high though so it is difficult to run around in there and shoo them in.)
It's enough of a hassle that we wouldn't get turkeys again - unless - if the chickens going in on their own will draw the turkeys in too, that would be managable.
I would like turkeys again since you get so much more meat for the pluckin'. The chickens would just be for eggs.
Part 2: any problem with them getting along? I can imagine chickens assassinating turkeys pretty handily, the turkeys would probably just sit there.....
Thanks,
Jim