FTP two devices Kinetic RoadMachine and Vasa SwimErg

I currently use TrainerRoad for Cycling and now use it for swimming as well when using a Vasa Swim Erg power meter. The FTP for swimming Vasa Swim Erg is 55 watts and cycle Kinetic Road Machine 175 watts. Two change the sport two test the FTP or buy another account. Is it possible to have the FTP only on the power-meters device.
Thanks, Craig