I was considering the option of having the 16-80mm lens on one body and the 50mm f1.8G on the other to have an option for better portrait photos. After doing the tests I decided that I liked 80mm at f4 more than any of the shots from the 50mm lens at various apertures, and it gives a better working distance.
You’ll have to excuse my model “Iris”, all her Borg implants have not been successfully removed yet.