Omni Supervised Fire vs. Fire Emergency

On the Omni there are two types of fire zones. One is called "Fire" and the documentation says its supervised. The other is called "Fire Emergency" and its "unsupervised."  I know they are wired differently, and one even has a jumper that needs to be moved, but I'm not clear how they function differently.
 
So i am using 4-wire smokes, have a supervision relay at the end, and for that I'm using a "Fire" type with a switched voltage source. That works fine.
 
My question is what do I use for my fire sprinkler zone?  There is just a normally closed pressure switch on the piping, to which I have added the 1K  EOL resistor, so no power, just a set of contacts.  Do I wire this like a normal zone and use "Fire Emergency" or do I wire it from switched power to the zone and select "Fire?"  I'm assuming "Fire Emergency" is OK but there is a warning in the manual that says this is not "supervised" and only use this type if you have to.

Is this a wet or dry system? What is the pressure switch supervising?
 
Usually anything sprinkler, besides a tamper switch, would be set as a fire zone. Sprinklers and their valves/flow switches don't typically false alarm. You want a evac if water starts flowing.

Supervision is paramount with any fire system connection, so I don't see the application for an unsupervised point (HAI's FPN pretty much says it's not compliant).
 
Assuming the switch is to indicate flow and not a low pressure alarm, then you would wire as a 2 wire zone, NO, EOLR across the terminals in the field, and connect to the panel the same as either a 2 wire fire zone or circuit wires on a 4 wire fire zone (no power connection or supervision relay needed).
 
"Fire Emergency" would not be a ZT choice for really any install out there, short of a non-compliant 3rd party FACP connection to receive a summary trip and that'd still be a very gray usage. "Fire Tamper" would be used to supervise a NAC circuit.