I have not noticed any simulcasting. I monitor WCPD daily as I live nearby. The last mention of ICIS was in the minutes of their July 1st city council meeting. From what I gathered, they are still in the process of purchasing the needed equipment.
"$33,000 into 117.31.3110.6120 for multi-agency police radio interoperability maintenance and service fees, paid directly to the East San Gabriel Valley Interagency Communications Interoperability System (Com-Net ICIS)."