In regards to the LPD system upgrading to P-25, I have heard that the LPD 'patrol officers' may get a second frequency that will be encrypted. This would be used for non SNEU situations; such as, homicides, hostage situations. This would probably similar to the system that the Methuen PD uses in their day to day activities.
As a side note, I have seen some Lawrence Public Safety personnel using the CCRs.
Whether it a citywide policy or not, I have no idea. One LFD Lt. said that he spent his own money, about $125, for his own CCR in place of the LFD issued radio. Not sure if he uses the LFD issued radio at the fire scene or not.