Yes, and yes! FS Traffic’s aircraft models can be used with any other third-party traffic program. Please refer to the respective traffic program’s documentation for instructions on how to use the FS Traffic models with its software.
Third-party aircraft models and liveries can be used in FS Traffic simply by entering the ‘Title=’ entry from their aircraft.cfg file into the Aircraft Manager page of the Traffic Control Centre. For further information, please refer to the Aircraft Manager section of the manual.