My team always uses frequencies that are not in the GMRS/FRS band (which is where "standard" radios operate). We do this because we became annoyed by other groups jumping on channels they weren't supposed to be on, both intentionally and unintentionally.
Of course, we also maintain communication with the standard radio bands. However, our "squad channel" is typically in the MURS frequencies. As long as we do not exceed two watts of output signal strength, we can operate there without licenses. So it is legal.