'The North Wales Police Unit chose the FENNS NG 700's (Gen 2+) with Omni 4 tubes as they gave better performance when used from an operational altitude of 500'
Omni IV tubes are Gen 3! It doesn't matter when the cases were made it is the tubes that decide the Generation, if you have Omni 4 you have a gen 3 set of goggles and they are the next best thing to Gated gen 3. And there we were getting all confused over your choice of Generation 2, which you don't seem to have after all.
Or do you still believe you do have Gen 2?