It all depends on the wattages of the devices on the other end and the maximum output of the Pad8. Providing you aren't exceeding the maximum wattage of the Pad8 this although is not ideal for troubleshooting it isn't necessarily "illegal".

Think about this as wiring in the "Star", again not an ideal wiring standard for troubleshooting Crestron does have this as one of their recommended wiring practices.