Once you start requiring Good consistent Turkish grinds (powder) your pushing the limits if the unit is required for others.
Then there is the issue of swapping between and clearing the chute / burrs and your expected setting. Even the ceramic hand grinders have been reviewed as not ideal for Turkish - Will do in a pinch but not perfect.
The Mahlkonig Vario Grinder (Di Bartoli Coffee Centre) has teh option to swap between settings with ease. However you would need to chat to them and other users as to how consistent it is.
That being said, am not sure that it would meet the purest expectations for great Turkish.
My suggestion would be to have two grinders. One for espresso and Plunger and a special for your Turkish.
One size does not always suit all, if looking for Great OR Perfection.