I've got a Billingham Hadley, it's very nicely made and I've enjoyed using it, but I've now got too many cameras to fit into it, so would probably keep the Hadley (pro maybe?) for the XT-2, the big zoom and the small zoom and maybe the 56mm lens, then a smaller bag for the XPro-3 and the 23mm and 35mm lenses.
I've got a Billingham Hadley, it's very nicely made and I've enjoyed using it, but I've now got too many cameras to fit into it, so would probably keep the Hadley (pro maybe?) for the XT-2, the big zoom and the small zoom and maybe the 56mm lens, then a smaller bag for the XPro-3 and the 23mm and 35mm lenses.