Can you say reliability or officer safety? SLINC is ok for admin BS but for day to day operations and critical stuff, no way. Or perhaps it's that $100K per year bill for using the SLINC network. They probably still have all of their VHF radios and repeaters although if they let thier license expire and they have to get recoordinated they may wind up having to go narrowband.
Just my $.05 (adjusted for the price of fuel)