Sharpend, that diagram is the standard diagram, you are not restricted on which zones you can use for ufh or rads. You can have 1 ufh zone and 7 rad zones or 7ufh zone and 1 rad zone..
The actual diagram that I have installed is zone 1 -> 3 actuators for ufh, zone 2 -> 1 actuator on 1 rad...