Not sure who you talked to but the county is providing agencies with an adequate number of radios. Remember on the fire side the new system is not replacing the current UHF fireground plan so not every firefighter needs a 7/800 radio. EMS is getting a portable for every active riding member. Departments that wish to purchase additional radios can purchase another manufactures radio if they wish as long as its Phase 2 capable. Some proprietary features may not be available on these radios but they will work on the system. Simulcast paging wasn't done years ago because the current microwave system lacks the needed bandwith.
In Rockland County, the police agencies use the APX6000 radios on the 700/800 system.The fire & EMS agencies use the APX7000 radios. FDs use the 700/800 system when responding to calls, when they get on scene, they use UHF fireground channels. Paging for FDs is also done of UHF & all radio transmissions on the 700/800 Fire 1 TG are repeated on the UHF paging channel. This allows all firefighters to use their UHF pagers & UHF portables to monitor the transmissions of responding units. So, not every firefighter needs an APX7000 radio. Also, 44 Control has the capability to monitor & if needed, transmit on the County FG channels (FG Tact 1-6). At 44 Control, they have their consoles connected to Broadcastify, so anyone can listen to all the FD channels over the internet or via a cellphone app. It is a nice added feature.
EMS agencies still get paged over VHF, but the tones and voice are also simulcasted over the 700/800 EMS talk groups. Since the pager function does not work on the 700/800 trunked system, this is done just to alert members who may not have their pagers on or have their radios tuned to only to the 700/800 system.
The good thing for the FD & EMS agencies, is that, if the 700/800 system happens to go completely down, UHF & VHF systems can be used as a backup.
All of these things mention above, should be considered for the new OC Radio System.