It looks like L/A will be switching to a 800 p25 trunking system in 2019-2020. Thank You to a fellow member from SNE who provided the link ULS Application - PubSafty/SpecEmer/PubSaftyNtlPlan,806-817/851-862MHz,Trunked - 0008412646 - AUBURN, CITY OF
5 site P25 Phase 2 TRS with VHF link. Read all about it.
http://www.auburnmaine.gov/CMSContent/Bids - FY19/LA 2019-001 - 800 MHz Public Safety Trunked Radio System Specs.pdf
Patches are used a lot on MSCommNet they are able to patch into most county dispatch channels and have little to no issues and the regionnets also play part in that. It seems only L/A will be on the 800mhz system probably with patched channels or they'll keep the channels they use now for inter-op plus they also have the statewide ConOps channels available for use.
I know there is a timeline somewhere. It won't be online for a few years but in the documentation i'm pretty sure it showed they were getting multiband.Now that EFJ has been awarded the contract, I wonder when the system will start to go online. Being that everyone else is VHF I can see L/A using multi band radios and patches.